diff --git a/lib/shared/thread-utils.js b/lib/shared/thread-utils.js
--- a/lib/shared/thread-utils.js
+++ b/lib/shared/thread-utils.js
@@ -130,8 +130,12 @@
     const communityThreadInfos = threadInfos.filter(threadInfo =>
       threadTypeIsCommunityRoot(threadInfo.type),
     );
-    const communityRoots = _keyBy('id')(communityThreadInfos);
 
+    if (communityThreadInfos.length === 0) {
+      return {};
+    }
+
+    const communityRoots = _keyBy('id')(communityThreadInfos);
     return _mapValues((threadInfo: ThreadInfo) => {
       const keyedMembers = _keyBy('id')(threadInfo.members);
       const keyedMembersToRole = _mapValues(
@@ -954,6 +958,43 @@
   return threadIsWithBlockedUserOnly(threadInfo, viewerID, userInfos, options);
 }
 
+function useThreadFrozenDueToViewerBlock(
+  threadInfo: ThreadInfo,
+  communityThreadInfo: ?ThreadInfo,
+  viewerID: ?string,
+  userInfos: UserInfos,
+): boolean {
+  const communityThreadInfoArray = React.useMemo(
+    () => (communityThreadInfo ? [communityThreadInfo] : []),
+    [communityThreadInfo],
+  );
+  const communityRootsMembersToRole = useCommunityRootMembersToRole(
+    communityThreadInfoArray,
+  );
+  const memberToRole = communityRootsMembersToRole[communityThreadInfo?.id];
+
+  const memberHasAdminRole = threadMembersWithoutAddedAdmin(threadInfo).some(
+    m => roleIsAdminRole(memberToRole?.[m.id]),
+  );
+
+  return React.useMemo(() => {
+    if (memberHasAdminRole) {
+      return false;
+    }
+
+    const options: ThreadIsWithBlockedUserOnlyOptions = {
+      checkOnlyViewerBlock: true,
+      skipMemberAdminRoleCheck: true,
+    };
+    return threadIsWithBlockedUserOnly(
+      threadInfo,
+      viewerID,
+      userInfos,
+      options,
+    );
+  }, [memberHasAdminRole, threadInfo, userInfos, viewerID]);
+}
+
 const threadTypeDescriptions: { [ThreadType]: string } = {
   [threadTypes.COMMUNITY_OPEN_SUBTHREAD]:
     'Anybody in the parent channel can see an open subchannel.',
@@ -1646,6 +1687,7 @@
   filterOutDisabledPermissions,
   threadFrozenDueToBlock,
   threadFrozenDueToViewerBlock,
+  useThreadFrozenDueToViewerBlock,
   rawThreadInfoFromServerThreadInfo,
   threadUIName,
   threadInfoFromRawThreadInfo,
diff --git a/native/chat/chat-input-bar.react.js b/native/chat/chat-input-bar.react.js
--- a/native/chat/chat-input-bar.react.js
+++ b/native/chat/chat-input-bar.react.js
@@ -60,7 +60,7 @@
   checkIfDefaultMembersAreVoiced,
   draftKeyFromThreadID,
   threadActualMembers,
-  threadFrozenDueToViewerBlock,
+  useThreadFrozenDueToViewerBlock,
   useThreadHasPermission,
   viewerIsMember,
 } from 'lib/shared/thread-utils.js';
@@ -84,7 +84,6 @@
   ClientThreadJoinRequest,
   ThreadJoinPayload,
 } from 'lib/types/thread-types.js';
-import { type UserInfos } from 'lib/types/user-types.js';
 import {
   type DispatchActionPromise,
   useDispatchActionPromise,
@@ -284,7 +283,6 @@
   +joinThreadLoadingStatus: LoadingStatus,
   +threadCreationInProgress: boolean,
   +calendarQuery: () => CalendarQuery,
-  +userInfos: UserInfos,
   +colors: Colors,
   +styles: $ReadOnly<typeof unboundStyles>,
   +onInputBarLayout?: (event: LayoutEvent) => mixed,
@@ -299,7 +297,6 @@
   +chatMentionSearchIndex: ?SentencePrefixSearchIndex,
   +chatMentionCandidates: ChatMentionCandidates,
   +parentThreadInfo: ?ThreadInfo,
-  +communityThreadInfo: ?ThreadInfo,
   +editedMessagePreview: ?MessagePreviewResult,
   +editedMessageInfo: ?MessageInfo,
   +editMessage: (
@@ -315,6 +312,7 @@
   +typeaheadMatchedStrings: ?TypeaheadMatchedStrings,
   +currentUserIsVoiced: boolean,
   +currentUserCanJoin: boolean,
+  +threadFrozen: boolean,
 };
 type State = {
   +text: string,
@@ -701,12 +699,7 @@
     if (this.shouldShowTextInput) {
       content = this.renderInput();
     } else if (
-      threadFrozenDueToViewerBlock(
-        this.props.threadInfo,
-        this.props.communityThreadInfo,
-        this.props.viewerID,
-        this.props.userInfos,
-      ) &&
+      this.props.threadFrozen &&
       threadActualMembers(this.props.threadInfo.members).length === 2
     ) {
       content = (
@@ -1269,6 +1262,13 @@
     community ? threadInfoSelector(state)[community] : null,
   );
 
+  const threadFrozen = useThreadFrozenDueToViewerBlock(
+    props.threadInfo,
+    communityThreadInfo,
+    viewerID,
+    userInfos,
+  );
+
   const userMentionsCandidates = useUserMentionsCandidates(
     props.threadInfo,
     parentThreadInfo,
@@ -1350,7 +1350,6 @@
       joinThreadLoadingStatus={joinThreadLoadingStatus}
       threadCreationInProgress={threadCreationInProgress}
       calendarQuery={calendarQuery}
-      userInfos={userInfos}
       colors={colors}
       styles={styles}
       isActive={isActive}
@@ -1363,7 +1362,6 @@
       chatMentionSearchIndex={chatMentionSearchIndex}
       chatMentionCandidates={chatMentionCandidates}
       parentThreadInfo={parentThreadInfo}
-      communityThreadInfo={communityThreadInfo}
       editedMessagePreview={editedMessagePreview}
       editedMessageInfo={editedMessageInfo}
       editMessage={editMessage}
@@ -1376,6 +1374,7 @@
       typeaheadMatchedStrings={typeaheadMatchedStrings}
       currentUserIsVoiced={currentUserIsVoiced}
       currentUserCanJoin={currentUserCanJoin}
+      threadFrozen={threadFrozen}
     />
   );
 }