UPDATE: Disregard—rroblem could not be reproduced after reboot, I suspect Windows resource issue. Usually these show up as memory exception errors when applications stop behaving.
This may be related, or not: If I open Schema Browser, ask it to "Pop Out" window, the popped-out Schema window seems to become 'always on top'. Nothing below it can grab focus (go to top of pile) unless I fully minimize the popped-out window.
I first observed this on .132. I'm in Schema Browser only occasionally, so don't know if previous version had this issue.
This is on a Windows 10 HP laptop with HP docking station, using four screens (built-in + 3 external monitors).