Spooky Ghost Groups in main chat list

[rsommerfeld]

Description
Duplicates of group chats were shown, some (but not all) of which didn't contain newer messages or group title updates. Furthermore, we were able to post a message into the duplicate of a read-only group. Obviously those messages did not show up in the actual group but they did persist in the duplicate across reloads of the TelegramClient and even after deleting the tdlib cache.

To Reproduce
Steps to reproduce the behavior:
0. Checkout setup

1. Set "(aChat positionKnown not
   and: [someOtherChat positionKnown])" in TCCChats >> defaultSortBlock to
   "(aChat positionKnown
   and: [someOtherChat positionKnown not])".

2. Open new Telegram Window and wait for re-ordering to finish

3. Look out for chats (groups) that are positioned higher than where they should be

Expected behavior
Only one Mensa Griebnitzsee should exist and it should be read-only (as the second one also is).

Screenshots

[tom-richter]

[tom-richter]

These groups also show up using python-telegram. I contacted the Telegram support.