https://www.bleepingcomputer.com/news/microsoft/windows-11-kb5034765-update-released-with-start-menu-fixes/

Microsoft has released the KB5034765 cumulative update for Windows versions 23H2 and 22H2 to fix several bugs in the OS, including an issue that causes problems with the Start menu.

As this update contains the Microsoft February 2024 Patch Tuesday security updates, KB5034765 is mandatory for all Windows 11 users unless you delay its installation.