We recently became aware of a problem with the latest update of macOS (13.1), when using ThinLinc client in full screen. You get a completely black screen whenever you enable full-screen. It doesn’t matter if you use a single monitor, or multiple, or if “Displays use separate spaces” is on or off.
For some odd reason, it works if you start the client in full-screen mode. But if you disable it and re-enable it, then you get a black screen again.
Tested on both ARM and x86.
The issue only happens with “Send system keys” enabled in the ThinLinc client.
At the moment there is no known work around