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
@@ -764,6 +764,8 @@
   const filterVoicedInAnnouncementChannelsPermission =
     options?.filterVoicedInAnnouncementChannelsPermission;
   const shouldMinimallyEncodePermissions = options?.minimallyEncodePermissions;
+  const shouldIncludeSpecialRoleFieldInRoles =
+    options?.includeSpecialRoleFieldInRoles;
 
   const filterThreadPermissions = _omitBy(
     (v, k) =>
@@ -878,9 +880,34 @@
       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(
+    Object.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 {