I just purchased a new Lenovo 7 14 (flip). It came with Windows 11 (factory bitlocked).
The first thing I tried after going through the Windows 11 configuration/account registration is see how compatible with Mate it was.
Everything works perfectly. Track-pad, keyboard (special function keys), touch screen, wifi, bluetooth, audio, camera.
After the quick 10 min test I attempted to reboot into windows. I did not attempt to install Ubuntu MATE.
That was when I was greeted by a blue screen that indicated Windows had detected an alternate operating system had accessed the hardware and locked the drive and then forced me to enter the bitlocker recovery key to continue.
Fortunately I had a second device that I could do go to my MS account and do so.
My HP Probook did not do this, which is also running Win 11 but it is not bitlocked.