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This is a known issue with build 22454. Even I have same issue on one of my system.
I've already reported to Microsoft and they're working on a fix.
Hope this helps!
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Could someone share a screenshot of Settings > Personalization > Themes in Windows 11?
supportedOS ID for windows 11
Is it mandatory to upgrade to Windows 11?
Cant install windows 11, tried alot (Windows 11 Insider Preview 10.0.22000.51 (co_release))
Upgrade to Windows 11 results in Select Keyboard menu after reboot