Google Pixel 8 random reboots fixed by debugging with Android Studio

I recently bought a refurbished Google Pixel 8 which was clearly unusable: The phone rebooted each time I used a feature which was consuming some power (Start to view a video on youtube, Take a picture using the camera, Starting some apps, calling someone ...) These "reboots" are different from reboots using the power button: The screen becomes black during a few seconds then the welcome screen is displayed again. There is no android nor google logo displayed before the welcome screen. I applied all OS and apps updates and the problem was still there. I started to debug the phone using logcat feature of Android Studio to see if there is some interesting information printed before such restart. I did not do anything else and the problem disappeared ! I disabled the developer mode required to debug using Android Studio and the issue did NOT reappear. What is the cause of these restarts ? How Android Studio debugging can fix such issue ?