For the first time I came across a twist of the filament thread

For the first time in ~35 kg, I came across a twist of the filament thread. This happened on a 1kg VVM Filament (PETG) coil.

How does Bambu Lab P1S behave?He prints "in the blank". It's not good. Because in fact, when a twist occurs, we cannot correct the situation (cut the filament and insert it again) if we are not around. In the mobile application, I waited for 100% printing (I didn't watch the camera). I went to shoot the printed, and there the twist and the model were printed in half. That is, the head printed with a void. I would like to have some kind of sensor/error when this happens. Here's my timelapse (it should be a street drinker for animals):