Fix membership event visibility condition.

CHANGES.md

@@ -10,6 +10,7 @@ Improvements 🙌:
 Bugfix 🐛:
  - Wait for all room members to be known before sending a message to a e2e room (#2518)
  - Url previews sometimes attached to wrong message (#2561)
+ - Fix member state filter (#2581)
 
 Translations 🗣:
  -

vector/src/main/java/im/vector/app/features/home/room/detail/timeline/helper/TimelineSettingsFactory.kt

@@ -57,7 +57,7 @@ class TimelineSettingsFactory @Inject constructor(
         return map {
             EventTypeFilter(
                     eventType = it,
-                    stateKey = if (it == EventType.STATE_ROOM_MEMBER && userPreferencesProvider.shouldShowRoomMemberStateEvents()) session.myUserId else null
+                    stateKey = if (it == EventType.STATE_ROOM_MEMBER && !userPreferencesProvider.shouldShowRoomMemberStateEvents()) session.myUserId else null
             )
         }
     }