This is the error message I get when the PC wakes up from hibernation. It can also happen when it is woken from sleep mode. The error is random and I have not been able to get it to replicate by force. When this error comes up that is when the hide taskbar option then becomes unchecked in taskbar behaviors. My thought are that windows sees that both taskbars on each monitor are hidden and for some reason, this is not allowed. I never had this issue in Windows 10. I went back and did a clean install of Windowws 11 and all of the updates and yet the problem persists.
I have exactly the same problem.