I have the exact same problem, but using Teamviewer 11. What I've noticed is on the remote PC, moving the local mouse locks and blacks out the remote screen. The local view still shows the wallpaper. I can log back in from the local screen and the remote screen comes back on whilst typing, but if I move the local mouse, the remote screen blanks again. I have tried setting wallpaper to show, disabling 'lock remote computer', anything that remotely might be linked, still unable to use.
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