Any issues for Cryptomator when installing Windows 11?

You need a virtual file system to display your unlocked vault as drive in windows explorer.
That can be windows WebDAV, dokany or WinSFP.
WebDAV is Part of the OS, but has limitations.
So many people use one of the other options (dokany or WinSFP) and install these 3rd party file systems
If you are on windows 11 I would recommend WinSFP, because some users reported problems with dokany on windows 11.