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
@@ -119,6 +119,7 @@
   type ThreadEntity,
   type UserEntity,
 } from '../utils/entity-text.js';
+import { entries } from '../utils/objects.js';
 import {
   useDispatchActionPromise,
   type DispatchActionPromise,
@@ -764,6 +765,8 @@
   const filterVoicedInAnnouncementChannelsPermission =
     options?.filterVoicedInAnnouncementChannelsPermission;
   const shouldMinimallyEncodePermissions = options?.minimallyEncodePermissions;
+  const shouldIncludeSpecialRoleFieldInRoles =
+    options?.includeSpecialRoleFieldInRoles;
 
   const filterThreadPermissions = _omitBy(
     (v, k) =>
@@ -878,9 +881,32 @@
       pinnedCount: serverThreadInfo.pinnedCount,
     };
   }
-  return shouldMinimallyEncodePermissions
-    ? minimallyEncodeRawThreadInfo(rawThreadInfo)
-    : rawThreadInfo;
+
+  if (!shouldMinimallyEncodePermissions) {
+    return rawThreadInfo;
+  } else if (!shouldIncludeSpecialRoleFieldInRoles) {
+    return minimallyEncodeRawThreadInfo(rawThreadInfo);
+  }
+
+  const rawThreadInfoWithoutSpecialRoles =
+    minimallyEncodeRawThreadInfo(rawThreadInfo);
+
+  const rolesWithSpecialRoleField = Object.fromEntries(
+    entries(rawThreadInfoWithoutSpecialRoles.roles).map(([key, role]) => [
+      key,
+      {
+        ...role,
+        specialRole: rolesWithFilteredThreadPermissions[key]?.specialRole,
+      },
+    ]),
+  );
+
+  const rawThreadInfoWithSpecialRolesPatchedIn = {
+    ...rawThreadInfoWithoutSpecialRoles,
+    roles: rolesWithSpecialRoleField,
+  };
+
+  return rawThreadInfoWithSpecialRolesPatchedIn;
 }
 
 function threadUIName(threadInfo: ThreadInfo): string | ThreadEntity {