Yep, its working again in 15.1 Beta 6!

Got a replay on my feedback. Lets hops this is true, I have now enabled Dev Beta and installing 15.1 Beta 6 (24B5070a). Let's hope for the best. Be right back. The replay from Apple on the feedback. "As a result of your feedback, there are changes in the latest update, build 24B5046f or later, that have resolved this issue. You can see the software build your device is running and check for the latest update by clicking on the Apple logo in the upper left hand corner > About This Mac. If the build is not visible, click on the macOS version, e.g. 10.15.x, to reveal it. If this issue is not resolved for you in the 24B5046f or later build, please file a new feedback report. Thanks!"

Issue description based of FB15149896 (sourced from Reddit) Setup: Two stacked displays, top (Samsung 4k) one is wider than bottom (MacBook Air M1) Expected behavior: pull cursor ‘below’ bottom area (to left or right of area where screens overlap) on ‘top’ screen, pull down just a bit more and dock ‘pops’ onto the top display, disappearing from bottom display Observed behavior: pull cursor ‘below’ bottom area (to left or right of area where screens overlap) on ‘top’ screen, pull down just a bit more, dock stays stuck on ‘bottom’ display, forcing me to go all the way down there to open an app

Also raised FB15168550. Thankfully I decided to only upgrade my MacBook Air M1 and not my work MacBook Pro M3, I think I keep that on MacOS 14 until this is solved.

Ok, then, that was quite unexpected. My plan was to buy an Apple Silicon Mac and run MacOS in VMs to be able to test Intune MDM. But since Im not able to sign in with AppleId this won't work. I guess I scramble that idea, no Mac for me until this is solved. Sad story, wy make it so hard Apple?