Losing keyboard input on Mac Client

[Michael Wong 0]

Hi, I'm running 1.13.1 Stable as server on MacOs 11.2.3 and Client 1.13.1 Stable on MacOS 10.15.7.

I am experiencing the loss of keyboard input on the client since a couple of days ago. It's been running fine for months.

A reboot of both machines temporarily solves the issue but then I lose keyboard input again after a bit. 

Any ideas?

[Michael Wong 0]

I seem to have found the offending app.

I'm running Signal v5.2.0. 

If Signal is running on the server machine it kills the KB on the client (Mouse functions fine).

If I turn off Signal then everything works as normal.