Display goes dark when connected

[Strangel]

When I use the Teamviewer android app to connect to another computer, the display goes dark. This is especially frustrating if I am trying to help someone remoely since i have to touch the display repeatedly in order to make it stay lit. This interfere with whatever the person on the other end is doing.
It seems to be a problem with the Teamviewer android app because when I use the YouTube app, the display stays lit.

For information:
Phone : Sony xperia z5 premium
OS: Android 6.01
TV ver: 11.0.5173 CL