Exclude yourself when decorating rooms which are direct or don't have more than 2 users.

CHANGES.md

@@ -9,6 +9,7 @@ Improvements 🙌:
 
 Bugfix 🐛:
  - Fix issue when updating the avatar of a room
+ - Exclude yourself when decorating rooms which are direct or don't have more than 2 users (#2370)
 
 Translations 🗣:
  -

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/crosssigning/UpdateTrustWorker.kt

@@ -241,9 +241,9 @@ internal class UpdateTrustWorker(context: Context,
     private fun computeRoomShield(activeMemberUserIds: List<String>, roomSummaryEntity: RoomSummaryEntity): RoomEncryptionTrustLevel {
         Timber.d("## CrossSigning - computeRoomShield ${roomSummaryEntity.roomId} -> $activeMemberUserIds")
         // The set of “all users” depends on the type of room:
-        // For regular / topic rooms, all users including yourself, are considered when decorating a room
+        // For regular / topic rooms which have more than 2 members (including yourself) are considered when decorating a room
         // For 1:1 and group DM rooms, all other users (i.e. excluding yourself) are considered when decorating a room
-        val listToCheck = if (roomSummaryEntity.isDirect) {
+        val listToCheck = if (roomSummaryEntity.isDirect || activeMemberUserIds.size <= 2) {
             activeMemberUserIds.filter { it != myUserId }
         } else {
             activeMemberUserIds