Qt for Python (PySide/Shiboken)

Hello Dears, I'm facing with a very annoying bug in my application. Let me give some details about it ; I'm using a touchscreen and my application only have one button to pop-up a Qdialog. You can access the code from this link. https://gist.github.com/barissacikara/24efb7e29148f35334b1bfee56cae13d The bug is : after sometime qt stop accepting any touchevent in my application however clicking from mouse seems working. I'm tried with both Pyside2 and Pyside6 and I'm using Xubuntu 20.04 do you guys have any idea about this bug ?