diff --git a/app/soapbox/api/hooks/groups/useGroupLookup.ts b/app/soapbox/api/hooks/groups/useGroupLookup.ts
index 89c778a15..6e41975e5 100644
--- a/app/soapbox/api/hooks/groups/useGroupLookup.ts
+++ b/app/soapbox/api/hooks/groups/useGroupLookup.ts
@@ -3,15 +3,24 @@ import { useEntityLookup } from 'soapbox/entity-store/hooks';
 import { useApi } from 'soapbox/hooks/useApi';
 import { groupSchema } from 'soapbox/schemas';
 
+import { useGroupRelationship } from './useGroupRelationship';
+
 function useGroupLookup(slug: string) {
   const api = useApi();
 
-  return useEntityLookup(
+  const { entity: group, ...result } = useEntityLookup(
     Entities.GROUPS,
     (group) => group.slug === slug,
     () => api.get(`/api/v1/groups/lookup?name=${slug}`),
     { schema: groupSchema },
   );
+
+  const { entity: relationship } = useGroupRelationship(group?.id);
+
+  return {
+    ...result,
+    entity: group ? { ...group, relationship: relationship || null } : undefined,
+  };
 }
 
 export { useGroupLookup };
\ No newline at end of file
diff --git a/app/soapbox/api/hooks/groups/useGroupRelationship.ts b/app/soapbox/api/hooks/groups/useGroupRelationship.ts
index 6b24c463c..21d8d3efd 100644
--- a/app/soapbox/api/hooks/groups/useGroupRelationship.ts
+++ b/app/soapbox/api/hooks/groups/useGroupRelationship.ts
@@ -7,14 +7,17 @@ import { useEntity } from 'soapbox/entity-store/hooks';
 import { useApi, useAppDispatch } from 'soapbox/hooks';
 import { type GroupRelationship, groupRelationshipSchema } from 'soapbox/schemas';
 
-function useGroupRelationship(groupId: string) {
+function useGroupRelationship(groupId: string | undefined) {
   const api = useApi();
   const dispatch = useAppDispatch();
 
   const { entity: groupRelationship, ...result } = useEntity<GroupRelationship>(
-    [Entities.GROUP_RELATIONSHIPS, groupId],
+    [Entities.GROUP_RELATIONSHIPS, groupId as string],
     () => api.get(`/api/v1/groups/relationships?id[]=${groupId}`),
-    { schema: z.array(groupRelationshipSchema).transform(arr => arr[0]) },
+    {
+      enabled: !!groupId,
+      schema: z.array(groupRelationshipSchema).transform(arr => arr[0]),
+    },
   );
 
   useEffect(() => {
diff --git a/app/soapbox/components/ui/icon/icon.tsx b/app/soapbox/components/ui/icon/icon.tsx
index f51c3ca38..709b3126f 100644
--- a/app/soapbox/components/ui/icon/icon.tsx
+++ b/app/soapbox/components/ui/icon/icon.tsx
@@ -17,11 +17,16 @@ interface IIcon extends Pick<React.SVGAttributes<SVGAElement>, 'strokeWidth'> {
   src: string
   /** Width and height of the icon in pixels. */
   size?: number
+  /** Override the data-testid */
+  'data-testid'?: string
 }
 
 /** Renders and SVG icon with optional counter. */
 const Icon: React.FC<IIcon> = ({ src, alt, count, size, countMax, ...filteredProps }): JSX.Element => (
-  <div className='relative flex shrink-0 flex-col' data-testid='icon'>
+  <div
+    className='relative flex shrink-0 flex-col'
+    data-testid={filteredProps['data-testid'] || 'icon'}
+  >
     {count ? (
       <span className='absolute -right-3 -top-2 flex h-5 min-w-[20px] shrink-0 items-center justify-center whitespace-nowrap break-words'>
         <Counter count={count} countMax={countMax} />
diff --git a/app/soapbox/entity-store/hooks/useEntity.ts b/app/soapbox/entity-store/hooks/useEntity.ts
index 63447ae67..3d57c8ab0 100644
--- a/app/soapbox/entity-store/hooks/useEntity.ts
+++ b/app/soapbox/entity-store/hooks/useEntity.ts
@@ -14,6 +14,8 @@ interface UseEntityOpts<TEntity extends Entity> {
   schema?: EntitySchema<TEntity>
   /** Whether to refetch this entity every time the hook mounts, even if it's already in the store. */
   refetch?: boolean
+  /** A flag to potentially disable sending requests to the API. */
+  enabled?: boolean
 }
 
 function useEntity<TEntity extends Entity>(
@@ -31,6 +33,7 @@ function useEntity<TEntity extends Entity>(
 
   const entity = useAppSelector(state => state.entities[entityType]?.store[entityId] as TEntity | undefined);
 
+  const isEnabled = opts.enabled ?? true;
   const isLoading = isFetching && !entity;
 
   const fetchEntity = async () => {
@@ -44,10 +47,11 @@ function useEntity<TEntity extends Entity>(
   };
 
   useEffect(() => {
+    if (!isEnabled) return;
     if (!entity || opts.refetch) {
       fetchEntity();
     }
-  }, []);
+  }, [isEnabled]);
 
   return {
     entity,
diff --git a/app/soapbox/features/group/components/__tests__/group-tag-list-item.test.tsx b/app/soapbox/features/group/components/__tests__/group-tag-list-item.test.tsx
index 4418fff86..f91853dc4 100644
--- a/app/soapbox/features/group/components/__tests__/group-tag-list-item.test.tsx
+++ b/app/soapbox/features/group/components/__tests__/group-tag-list-item.test.tsx
@@ -91,31 +91,32 @@ describe('<GroupTagListItem />', () => {
           expect(screen.queryAllByTestId('pin-icon')).toHaveLength(0);
         });
       });
+    });
 
-      describe('as a non-owner', () => {
-        const group = buildGroup({
-          relationship: buildGroupRelationship({
-            role: GroupRoles.ADMIN,
-            member: true,
-          }),
+    describe('as a non-owner', () => {
+      const group = buildGroup({
+        relationship: buildGroupRelationship({
+          role: GroupRoles.ADMIN,
+          member: true,
+        }),
+      });
+
+      describe('when the tag is pinned', () => {
+        const tag = buildGroupTag({ pinned: true, visible: true });
+
+        it('does render the pin icon', () => {
+          render(<GroupTagListItem group={group} tag={tag} isPinnable />);
+          screen.debug();
+          expect(screen.queryAllByTestId('pin-icon')).toHaveLength(1);
         });
+      });
 
-        describe('when the tag is visible', () => {
-          const tag = buildGroupTag({ visible: true });
+      describe('when the tag is not pinned', () => {
+        const tag = buildGroupTag({ pinned: false, visible: true });
 
-          it('does not render the pin icon', () => {
-            render(<GroupTagListItem group={group} tag={tag} isPinnable />);
-            expect(screen.queryAllByTestId('pin-icon')).toHaveLength(0);
-          });
-        });
-
-        describe('when the tag is not visible', () => {
-          const tag = buildGroupTag({ visible: false });
-
-          it('does not render the pin icon', () => {
-            render(<GroupTagListItem group={group} tag={tag} isPinnable />);
-            expect(screen.queryAllByTestId('pin-icon')).toHaveLength(0);
-          });
+        it('does not render the pin icon', () => {
+          render(<GroupTagListItem group={group} tag={tag} isPinnable />);
+          expect(screen.queryAllByTestId('pin-icon')).toHaveLength(0);
         });
       });
     });
diff --git a/app/soapbox/features/group/components/group-action-button.tsx b/app/soapbox/features/group/components/group-action-button.tsx
index 005b9e245..f3b208574 100644
--- a/app/soapbox/features/group/components/group-action-button.tsx
+++ b/app/soapbox/features/group/components/group-action-button.tsx
@@ -55,6 +55,12 @@ const GroupActionButton = ({ group }: IGroupActionButton) => {
           : intl.formatMessage(messages.joinSuccess),
       );
     },
+    onError(error) {
+      const message = (error.response?.data as any).error;
+      if (message) {
+        toast.error(message);
+      }
+    },
   });
 
   const onLeaveGroup = () =>
diff --git a/app/soapbox/features/group/components/group-header.tsx b/app/soapbox/features/group/components/group-header.tsx
index ad22e1e13..2491a7bb7 100644
--- a/app/soapbox/features/group/components/group-header.tsx
+++ b/app/soapbox/features/group/components/group-header.tsx
@@ -99,7 +99,7 @@ const GroupHeader: React.FC<IGroupHeader> = ({ group }) => {
 
       if (!isDefaultHeader(group.header)) {
         header = (
-          <a href={group.header} onClick={handleHeaderClick} target='_blank' className='relative'>
+          <a href={group.header} onClick={handleHeaderClick} target='_blank' className='relative w-full'>
             {header}
           </a>
         );
@@ -155,6 +155,7 @@ const GroupHeader: React.FC<IGroupHeader> = ({ group }) => {
                 theme='muted'
                 align='center'
                 dangerouslySetInnerHTML={{ __html: group.note_emojified }}
+                className='[&_a]:text-primary-600 [&_a]:hover:underline [&_a]:dark:text-accent-blue'
               />
             </Stack>
 
diff --git a/app/soapbox/features/group/components/group-options-button.tsx b/app/soapbox/features/group/components/group-options-button.tsx
index 597a751d7..ebc3152e4 100644
--- a/app/soapbox/features/group/components/group-options-button.tsx
+++ b/app/soapbox/features/group/components/group-options-button.tsx
@@ -19,6 +19,7 @@ const messages = defineMessages({
   leave: { id: 'group.leave.label', defaultMessage: 'Leave' },
   leaveSuccess: { id: 'group.leave.success', defaultMessage: 'Left the group' },
   report: { id: 'group.report.label', defaultMessage: 'Report' },
+  share: { id: 'group.share.label', defaultMessage: 'Share' },
 });
 
 interface IGroupActionButton {
@@ -35,6 +36,15 @@ const GroupOptionsButton = ({ group }: IGroupActionButton) => {
   const isAdmin = group.relationship?.role === GroupRoles.ADMIN;
   const isBlocked = group.relationship?.blocked_by;
 
+  const handleShare = () => {
+    navigator.share({
+      text: group.display_name,
+      url: group.url,
+    }).catch((e) => {
+      if (e.name !== 'AbortError') console.error(e);
+    });
+  };
+
   const onLeaveGroup = () =>
     dispatch(openModal('CONFIRM', {
       heading: intl.formatMessage(messages.confirmationHeading),
@@ -49,6 +59,7 @@ const GroupOptionsButton = ({ group }: IGroupActionButton) => {
     }));
 
   const menu: Menu = useMemo(() => {
+    const canShare = 'share' in navigator;
     const items = [];
 
     if (isMember || isAdmin) {
@@ -59,6 +70,14 @@ const GroupOptionsButton = ({ group }: IGroupActionButton) => {
       });
     }
 
+    if (canShare) {
+      items.push({
+        text: intl.formatMessage(messages.share),
+        icon: require('@tabler/icons/share.svg'),
+        action: handleShare,
+      });
+    }
+
     if (isAdmin) {
       items.push({
         text: intl.formatMessage(messages.leave),
diff --git a/app/soapbox/features/group/components/group-tag-list-item.tsx b/app/soapbox/features/group/components/group-tag-list-item.tsx
index bf02cc202..07660cf21 100644
--- a/app/soapbox/features/group/components/group-tag-list-item.tsx
+++ b/app/soapbox/features/group/components/group-tag-list-item.tsx
@@ -3,7 +3,7 @@ import { defineMessages, useIntl } from 'react-intl';
 import { Link } from 'react-router-dom';
 
 import { useUpdateGroupTag } from 'soapbox/api/hooks';
-import { HStack, IconButton, Stack, Text, Tooltip } from 'soapbox/components/ui';
+import { HStack, Icon, IconButton, Stack, Text, Tooltip } from 'soapbox/components/ui';
 import { importEntities } from 'soapbox/entity-store/actions';
 import { Entities } from 'soapbox/entity-store/entities';
 import { useAppDispatch } from 'soapbox/hooks';
@@ -84,6 +84,20 @@ const GroupTagListItem = (props: IGroupMemberListItem) => {
   };
 
   const renderPinIcon = () => {
+    if (!isOwner && tag.pinned) {
+      return (
+        <Icon
+          src={require('@tabler/icons/pin-filled.svg')}
+          className='h-5 w-5 text-gray-600'
+          data-testid='pin-icon'
+        />
+      );
+    }
+
+    if (!isOwner) {
+      return null;
+    }
+
     if (isPinnable) {
       return (
         <Tooltip
@@ -149,12 +163,12 @@ const GroupTagListItem = (props: IGroupMemberListItem) => {
         </Stack>
       </Link>
 
-      {isOwner ? (
-        <HStack alignItems='center' space={2}>
-          {tag.visible ? (
-            renderPinIcon()
-          ) : null}
+      <HStack alignItems='center' space={2}>
+        {tag.visible ? (
+          renderPinIcon()
+        ) : null}
 
+        {isOwner ? (
           <Tooltip
             text={
               tag.visible ?
@@ -173,8 +187,8 @@ const GroupTagListItem = (props: IGroupMemberListItem) => {
               iconClassName='h-5 w-5 text-primary-500 dark:text-accent-blue'
             />
           </Tooltip>
-        </HStack>
-      ) : null}
+        ) : null}
+      </HStack>
     </HStack>
   );
 };
diff --git a/app/soapbox/features/group/components/group-tags-field.tsx b/app/soapbox/features/group/components/group-tags-field.tsx
index ba98d808e..f8092d5c0 100644
--- a/app/soapbox/features/group/components/group-tags-field.tsx
+++ b/app/soapbox/features/group/components/group-tags-field.tsx
@@ -1,4 +1,4 @@
-import React from 'react';
+import React, { useMemo } from 'react';
 import { FormattedMessage, defineMessages, useIntl } from 'react-intl';
 
 import { Input, Streamfield } from 'soapbox/components/ui';
@@ -36,15 +36,19 @@ const GroupTagsField: React.FC<IGroupTagsField> = ({ tags, onChange, onAddItem,
 const HashtagField: StreamfieldComponent<string> = ({ value, onChange, autoFocus = false }) => {
   const intl = useIntl();
 
+  const formattedValue = useMemo(() => {
+    return `#${value}`;
+  }, [value]);
+
   const handleChange: React.ChangeEventHandler<HTMLInputElement> = ({ target }) => {
-    onChange(target.value);
+    onChange(target.value.replace('#', ''));
   };
 
   return (
     <Input
       outerClassName='w-full'
       type='text'
-      value={value}
+      value={formattedValue}
       onChange={handleChange}
       placeholder={intl.formatMessage(messages.hashtagPlaceholder)}
       autoFocus={autoFocus}
diff --git a/app/soapbox/features/group/edit-group.tsx b/app/soapbox/features/group/edit-group.tsx
index c0e972604..82f4841b4 100644
--- a/app/soapbox/features/group/edit-group.tsx
+++ b/app/soapbox/features/group/edit-group.tsx
@@ -1,7 +1,7 @@
 import React, { useEffect, useState } from 'react';
 import { defineMessages, FormattedMessage, useIntl } from 'react-intl';
 
-import { useGroup, useUpdateGroup } from 'soapbox/api/hooks';
+import { useGroup, useGroupTags, useUpdateGroup } from 'soapbox/api/hooks';
 import { Button, Column, Form, FormActions, FormGroup, Icon, Input, Spinner, Textarea } from 'soapbox/components/ui';
 import { useAppSelector, useInstance } from 'soapbox/hooks';
 import { useImageField, useTextField } from 'soapbox/hooks/forms';
@@ -36,6 +36,7 @@ const EditGroup: React.FC<IEditGroup> = ({ params: { groupId } }) => {
 
   const { group, isLoading } = useGroup(groupId);
   const { updateGroup } = useUpdateGroup(groupId);
+  const { invalidate } = useGroupTags(groupId);
 
   const [isSubmitting, setIsSubmitting] = useState(false);
   const [tags, setTags] = useState<string[]>(['']);
@@ -64,6 +65,7 @@ const EditGroup: React.FC<IEditGroup> = ({ params: { groupId } }) => {
       tags,
     }, {
       onSuccess() {
+        invalidate();
         toast.success(intl.formatMessage(messages.groupSaved));
       },
       onError(error) {
diff --git a/app/soapbox/features/group/group-tags.tsx b/app/soapbox/features/group/group-tags.tsx
index 710a4fdb5..d5335e844 100644
--- a/app/soapbox/features/group/group-tags.tsx
+++ b/app/soapbox/features/group/group-tags.tsx
@@ -36,7 +36,7 @@ const GroupTopics: React.FC<IGroupTopics> = (props) => {
       showLoading={!group || isLoading && tags.length === 0}
       placeholderComponent={PlaceholderAccount}
       placeholderCount={3}
-      className='divide-y divide-solid divide-gray-300'
+      className='divide-y divide-solid divide-gray-300 dark:divide-gray-800'
       itemClassName='py-3 last:pb-0'
       emptyMessage={
         <Stack space={4} className='pt-6' justifyContent='center' alignItems='center'>
diff --git a/app/soapbox/features/groups/components/group-link-preview.tsx b/app/soapbox/features/groups/components/group-link-preview.tsx
index 18ca586a5..98ca03076 100644
--- a/app/soapbox/features/groups/components/group-link-preview.tsx
+++ b/app/soapbox/features/groups/components/group-link-preview.tsx
@@ -19,7 +19,7 @@ const GroupLinkPreview: React.FC<IGroupLinkPreview> = ({ card }) => {
   return (
     <Stack className='cursor-default overflow-hidden rounded-lg border border-gray-300 text-center dark:border-gray-800'>
       <div
-        className='-mb-8 h-32 w-full bg-center'
+        className='-mb-8 h-32 w-full bg-cover bg-center'
         style={{ backgroundImage: `url(${group.header})` }}
       />
 
diff --git a/app/soapbox/features/ui/components/compose-button.tsx b/app/soapbox/features/ui/components/compose-button.tsx
index a21909bb1..7686f9c55 100644
--- a/app/soapbox/features/ui/components/compose-button.tsx
+++ b/app/soapbox/features/ui/components/compose-button.tsx
@@ -10,8 +10,12 @@ import { useAppDispatch } from 'soapbox/hooks';
 
 const ComposeButton = () => {
   const location = useLocation();
+  const isOnGroupPage = location.pathname.startsWith('/group/');
+  const match = useRouteMatch<{ groupSlug: string }>('/group/:groupSlug');
+  const { entity: group } = useGroupLookup(match?.params.groupSlug || '');
+  const isGroupMember = !!group?.relationship?.member;
 
-  if (location.pathname.startsWith('/group/')) {
+  if (isOnGroupPage && isGroupMember) {
     return <GroupComposeButton />;
   }
 
diff --git a/app/soapbox/features/ui/components/modals/manage-group-modal/steps/confirmation-step.tsx b/app/soapbox/features/ui/components/modals/manage-group-modal/steps/confirmation-step.tsx
index 11244c3c5..785da5da1 100644
--- a/app/soapbox/features/ui/components/modals/manage-group-modal/steps/confirmation-step.tsx
+++ b/app/soapbox/features/ui/components/modals/manage-group-modal/steps/confirmation-step.tsx
@@ -56,7 +56,7 @@ const ConfirmationStep: React.FC<IConfirmationStep> = ({ group }) => {
           <Text size='2xl' weight='bold' align='center'>{group.display_name}</Text>
           <Text
             size='md'
-            className='mx-auto max-w-sm'
+            className='mx-auto max-w-sm [&_a]:text-primary-600 [&_a]:hover:underline [&_a]:dark:text-accent-blue'
             dangerouslySetInnerHTML={{ __html: group.note_emojified }}
           />
         </Stack>
diff --git a/app/soapbox/locales/en.json b/app/soapbox/locales/en.json
index 919b33901..879294583 100644
--- a/app/soapbox/locales/en.json
+++ b/app/soapbox/locales/en.json
@@ -807,6 +807,7 @@
   "group.report.label": "Report",
   "group.role.admin": "Admin",
   "group.role.owner": "Owner",
+  "group.share.label": "Share",
   "group.tabs.all": "All",
   "group.tabs.media": "Media",
   "group.tabs.members": "Members",