I have the original base m3 Matebook. Ever since I updated to creator I've had random problems with both the touch and fingerprint reader. I get random cutouts of both.
In the middle of using it the touchscreen will just stop working for 30 seconds or more. The styus and track pad on the keyboard cover still work fine. I also notice this problem on wake.
Sometimes on wake it seems to be bogged down and won't respond to the fingerprint reader. I don't even get the error that it didn't work.
I took it in to the MS store and they updated drivers and firmware. In the months since this hasn't provided any lasting fix.