Nextcloud Talk screensharing freezes after some time

During talks with screensharing, from time to time, the sent screen freezes and does not show any changes. Ending screensharing and restart without leaving the call helps, but is quite inconvenient.

Does anybody else have this issue? Or does anybody know what might cause it?

Nextcloud 18.0.1, Talk 8.0.4 without any additional servers (TURN/STUN)