A new behaviour today: Explorer.exe keeps crashing after it's combined with an Edge window. Affects Edge RTM and Edge Dev versions.
The windows combine fine, but when tabs are switched, Explorer crashes with the following error in the Application Log: (event ID 1000), and eventually redraws itself (Desktop, Taskbar, etc)
Faulting application name: explorer.exe, version: 10.0.19041.610, time stamp: 0xab30c679
Faulting module name: ucrtbase.dll, version: 10.0.19041.546, time stamp: 0x43cbc11d
Exception code: 0xc0000409
Fault offset: 0x000000000007287e
Faulting process ID: 0x1654
Faulting application start time: 0x01d6c30738182e9b
Faulting application path: C:\WINDOWS\explorer.exe
Faulting module path: C:\WINDOWS\System32\ucrtbase.dll
I've tried to work out whether anything new is present, but there doesn't seem to be - this was working OK all day yesterday.
Ah - a bit more testing shows that any time Edge is Grouped at all, any switch to or from it restarts Explorer even when explorer isn't part of that group.
Affects both the Stable 87.0.664.47 and the Dev 88.0.702.0 versions of Edge... at least today!