I am using TeamViewer on a mac to remote control a Windows 10 laptop. When I use Alt-Tab to change the focus away from TeamViewer to another app on the controlling mac, the Start Menu pops up on the controlled Windows 10 machine. If I change focus away from TeamViewer by mousing down to the dock and clicking on the other app, it doesn't happen. But I never do that! I always use Alt-Tab. It's very frustrating, and it annoys the people I am helping remotely as well.
Is there any way to fix it? I would like to be able to Alt-Tab away from the TeamViewer app on the controlling mac without the Start menu popping up on the controlled Windows 10 machine.