Try again, this time put hold your phone landscape
Put your left thumb on the left side of the screen, hold.
Meanwhile, Your right thumb, press and move around. Try this multiple time. There will be one time out of 5-7 where the screen does not register the right thumb movement. It sort of stuck in the middle, even when your right thumb is swiping around.
I think someone made a video showing it here
https://issuetracker.google.com/issues/70344455
Edge sensitivity is definitely better on Latest patch tho