[ubuntu_mate] Teamviewer 11 remote session windows won't minimize

This is on Ubuntu Mate 16.04, ruing Teamviewer 11 for Linux. (I believe this is basically the Windows Teamviewer program packaged with its own customized version of wine to run.) Video is Intel.

I'm finding that Teamviewer remote session windows caot be minimized. When this is attempted, the remote session briefly appears to minimize then immediately bounces back to its former position on the screen. Teamviewer is the only application doing this and it occurs only on remote session windows. The main program windows minimize normally. (I also run Teamviewer on laptops with Xubuntu 14.04 - they do not exhibit this behavior.)

It's a real aoyance when working with multiple applications. Anyone else seen this behavior or have an idea how to fix it?