switching between monitors fails

I have installed teamviewer at my android smartphone and at my Win 10 desktop PC. (all versions up to date). When I´m connected from my smartphone to the desktop PC, I can´t switch between the to monitors of the desktop pc. When I do so, the pc main monitor on the display of may Smarthone disappears and a black screen appears with a frozen mouse. After this I can only terminate the application.

This has been worked before but I don´t know, since when the pissue occurs.

Any ideas?