I’m running the bed that came with my Ender 3 pro (using a pei sheet, this is repeatable with glass too), been having this issue for a while I think. Is it time to replace the bed?
Update: Figured it out, what my bl touch was attached to was very loose, and was going up on the far side of the x gantry. and it’s now fine.
I had a roller lifting up at the edge of the bed that caused this. In my case is defined the bed mesh to large in klipper and the hot end was pushing up metal slope on thex gantry.