Teamviewer acting funny on Ubuntu 19.04

Hi,

my two computers are both running Ubuntu 19.04. Teamviewer version with the problem is 14.2 and 14.4 client side, and probably at least 14 server-side (cannot get this info precise right now).
Unfortunately teamviewer is acting funny lately, no matter if I disconnect and reconnect it behaves like in this screenshot: external link removed by moderator forcing me to reset the "server" teamviewer or reboot the machine.

This keeps happening again and again. Any idea on how to solve this?

best,

-Francesco