Andrew Box
I have this issue too on an ender-5, mini e3 1.2 board, bltouch, Marlin 2.x. I tried isolating the bottom of the board from the printer case witjh 2 layers...
Edit- it's not fixed, I thought adding a ground wire from the main board to the printer case/mains ground fixed it b/c I had a 1.5 hr print that didn't...
Along the same lines, some sort of automatic "running summary" feature could be interesting, as I think about clearing and using context. I know a lot of people do this...