Ghost touch issue?
I have had literal plague of it in February 2023. All my devices suffered from problem. Samsung Galaxy S10+ on one ui and 3 Microsoft Surface Pro 4/5 tablets. It was driving me crazy. It was coming and going whole early 2023 till may. Then it stopped and never came back. Cleaning screen never helped for long. Sometimes it didn’t help or made it even worse.
I think it is fine conductive dust