I've found something thing macOS Big Sur broke - the "recovery" after changing display sources. Let me explain... I have one big 4K monitor, connected to both my Mac (USB-C) and my PC (HDMI). I switch between the two sources on the monitor depending on what I'm doing. Each computer also has its own dedicated monitor (built-in for my Macbook, an old external for my PC). Prior to macOS Big Sur, if I switched to the PC input on the monitor, all the macOS windows would shift over to the built-in laptop display, and then shift back to their correct window once I switched back. They no longer do that. The application all stay on the laptop screen and the big screen is empty when I switch the source back on the monitor. I then have to move everything back to the big display. I guess that's better than the PC behavior where even if you switch the source on the display back to the Mac, Windows still thinks its connected and continues to extend the display (the fix for that is to go to display properties and select "only show on display 2") , but thats a whole other gripe. Has anyone else experienced this as well? Is there a setting I'm missing? Should I file a bug report?

I found it kind of surprising that there are actually bugfixes for Final Cut Pro listed in the release notes for build 20A5364e, considering the latest version of Final Cut Pro will not run on it. I can't find any information at all on why FCP is no longer working - no bug reports, no end user complaints, nothing. Does anyone have an information on this? FCP 10.4.8 on macOS 11.0 Beta 6 20A5364e