While a headphone is connected, the proximity sensor is completely ignored during calls. This means that the screen will not turn itself off nor ignore accidental touches.
This happens whether a headphone is connected via 3.5mm jack, a USB-C -> 3.5mm adapter, or Bluetooth. This also happens across different pairs of headphones.
Can anyone confirm whether this is happening on their device?
ASUS, please fix this. This is a major problem.