Most likely the screen was replaced with a screen from a different revision. How can I fix the problem with multitouch? Maybe I need to install a driver or replace the configuration file?

Hello! My Pixel 6 Pro multitouch only supports 2 touches instead of 10. But at the same time, the fingerprint works very well and the screen refresh rate is 120 Hz. What could be the problem? Is my display not original? Or is there a problem with the digitizer? How to check the screen for originality without disassembling the phone?