This is another good point. I’d try turning off Fast Startup first, and if that alone doesn’t clear the issue, try this (leaving Fast Startup off).

Make sure that Windows Fast Startup is turned off. I don’t know if that’s specifically the problem here, but in my experience quite a few “everything’s fine, it should be working!” boot issues have been resolved by booting into Windows, turning off Fast Startup, and then doing a full shut down before going back to Linux, especially on laptops.