Removes opened rooms from last message persisting

app/sagas/rooms.js

@@ -61,7 +61,13 @@ const handleRoomsRequest = function* handleRoomsRequest({ params }) {
 			const subsToCreate = subscriptions.filter(i1 => !existingSubs.find(i2 => i1._id === i2._id));
 			const subsToDelete = existingSubs.filter(i1 => !subscriptions.find(i2 => i1._id === i2._id));
 
+			const openedRooms = yield select(state => state.room.rooms);
 			const lastMessages = subscriptions
+				/** Checks for opened rooms and filter them out.
+				 * It prevents this process to try persisting the same last message on the room messages fetch.
+				 * This race condition is easy to reproduce on push notification tap.
+				 */
+				.filter(sub => !openedRooms.includes(sub.rid))
 				.map(sub => sub.lastMessage && buildMessage(sub.lastMessage))
 				.filter(lm => lm);
 			const lastMessagesIds = lastMessages.map(lm => lm._id);