Left and deleted room reapears in room list

[waclaw66]

Steps to reproduce

1. Create a new (unencrypted) room, room appears in active room list
2. Leave the room, room appears in historical room list
3. Delete the room via API
4. Refresh Element (F5), room reappears in active room list

Outcome

What did you expect?

When a room is deleted it shouldn't appear in active room list

What happened instead?

Room appeared in active room list. The workaround to get rid of that room is clear cache and reload.

Operating system

Windows 10

Browser information

Firefox 96b5

URL for webapp

own

Application version

Element version: 1.9.8-rc.1 Olm version: 3.2.8

Homeserver

own

Will you send logs?

No

[t3chguy]

This is likely a Synapse issue. Because Element only persists /syncs to the non-volatile accumulator periodically, if you refreshed before the left room was persisted, the next time you load Element, in the incremental sync that room would be missing from the left category in the /sync response because your Synapse had wiped all knowledge of it.