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
@@ -45,6 +45,7 @@
   MemberInfoWithPermissions,
   RoleInfo,
   ThreadInfo,
+  MemberInfoSansPermissions,
 } from '../types/minimally-encoded-thread-permissions-types.js';
 import {
   decodeMinimallyEncodedRoleInfo,
@@ -312,7 +313,11 @@
 }
 
 function threadOtherMembers<
-  T: LegacyMemberInfo | MemberInfoWithPermissions | RelativeMemberInfo,
+  T:
+    | LegacyMemberInfo
+    | MemberInfoWithPermissions
+    | MemberInfoSansPermissions
+    | RelativeMemberInfo,
 >(memberInfos: $ReadOnlyArray<T>, viewerID: ?string): $ReadOnlyArray<T> {
   return memberInfos.filter(
     memberInfo => memberInfo.role && memberInfo.id !== viewerID,