Taskbar missing on Windows 11 Multisession AVD with Profiles with FSlogix

[Fembi]

Hello everyone and thank you for your help in Advance.

Here are the Pictures

 

So here is the Problem: I have 1 VM with around 10 users, one of them his taskbar stopped or froze, nothing shows up, no search, no icons, right mouse click on it and nothing, ALT TAB does not work, Deleted and recreated his FSLogix profile and the same issue.
Windows version is:

Restarted his Windows explorer and nothing, restarted his session and nothing.
We use Remote Desktop

Has Anyone seen this problem Before? is there any Fix?

[#2]

any diffence between web access and avd client?

[#3]

Hi, no, they only have access through Remote Desktop using latest version.