Cross-post from here, where I was redirected to this forum.
We have a bunch of Server 2019 RDS machines, that until last weekend worked fine. For roaming the start menu we roam AppData\Local\Microsoft\Windows\CloudStore and so far that worked perfectly for having for examples Tiles saved that users put in the start menu themselves.
Since installing KB4519338 this weekend during our maintenance, the start menu is not working anymore. Only right-click works, but the start menu itself is not functional. We all know the start-menu terror from Windows 10 syspreps and what not. When I remove AppData\Local\Microsoft\Windows\CloudStore from roaming, the start menu works again, but of course customizations aren't saved. We've tried roaming AppData\Local\Microsoft\Windows\Caches as well, as that's to be seen in some howto's, but we've never found that to be needed, and it doesn't help here either.
Anyone else with this issue? By the way the latest as of yet KB4520062 does not fix this either, even if that has some start menu fixes.