diff --git a/lib/shared/ancestor-threads.js b/lib/shared/ancestor-threads.js
index 15de581c3..e13eadbda 100644
--- a/lib/shared/ancestor-threads.js
+++ b/lib/shared/ancestor-threads.js
@@ -1,33 +1,36 @@
 // @flow
 
 import * as React from 'react';
 
 import genesis from '../facts/genesis.js';
 import {
   ancestorThreadInfos,
   threadInfoSelector,
 } from '../selectors/thread-selectors.js';
 import { threadIsPending } from '../shared/thread-utils.js';
 import type { ThreadInfo } from '../types/minimally-encoded-thread-permissions-types.js';
+import { threadTypeIsThick } from '../types/thread-types-enum.js';
 import { useSelector } from '../utils/redux-utils.js';
 
 function useAncestorThreads(
   threadInfo: ThreadInfo,
 ): $ReadOnlyArray<ThreadInfo> {
   const ancestorThreads = useSelector(ancestorThreadInfos(threadInfo.id));
 
   const genesisThreadInfo = useSelector(
     state => threadInfoSelector(state)[genesis().id],
   );
 
   return React.useMemo(() => {
     if (!threadIsPending(threadInfo.id)) {
       return ancestorThreads.length > 1
         ? ancestorThreads.slice(0, -1)
         : ancestorThreads;
     }
-    return genesisThreadInfo ? [genesisThreadInfo] : [];
-  }, [ancestorThreads, genesisThreadInfo, threadInfo.id]);
+    return genesisThreadInfo && !threadTypeIsThick(threadInfo.type)
+      ? [genesisThreadInfo]
+      : [];
+  }, [ancestorThreads, genesisThreadInfo, threadInfo.id, threadInfo.type]);
 }
 
 export { useAncestorThreads };