Windows 11 Insider Preview 25151.1000 was published for developers on the Dev Channel and brings a number of significant changes compared to the previous version. At the same time I am fixed a number of bugs-s and errors.
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What brings new Windows 11 Insider Preview 25151?
In this new update, no UI changes or new features are implemented, but errors and bugs of the previous versions are corrected.

File Explorer
In Windows 11 Insider Preview 25151, a bug that led to the oversizing of tabs in File Explorer. Some became abnormally large under certain conditions.
Into File Explorer, the context menu that appears when you right-click on a tab has become more reliable.
Fix Shut Down in Start Menu / Restart
In Build 25145 some users encountered an unexpected problem when trying to shut down the PC from Start → Shut Down. It restarted inexplicably. Practically, the closing button played the role of Restart. This problem was solved in Build 25151.
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Fix Windows Security crash
In the previous version, many unexpected crashes of Windows Security were reported. Microsoft fixed this Windows Security blocking issue in Build 25151, but it is possible that for some users of Windows 11 Insider Preview 25151 problem to appear again.
Fixed printing errors
In previous versions of Windows 11 Insider, problems were reported with UWP printer applications. They either could not execute the print command, or the user has to try printing repeatedly to reach a result.
This problem is solved in Build 25151
Unresolved errors and bugs in Build 25151
Some games installed on Windows 11 Insider Preview 25151.1000 that use Easy Anti-Cheat may have problems running or trigger Windows 11's bug checking system.
We are still investigating why some Insider users are getting the error KMODE_EXCEPTION_NOT_HANDLED in NetAdapterCx.sys.
The up arrow in File Explorer is not aligned correctly with the tabs. This element will be solved in future versions.
Personalization Widgets change to default settings after restart. For example, the unit of measurement for temperature.