Why does this happen?

Ender 3 S1 Pro
Cura
No supports.
Spaghetti in certain parts of this model
Need help with a diagnosis

20220925_103233

The problem might be related to part cooling. If the layers don’t cool properly, the filament will bend upwards and get caught in the nozzle.
Adding a bit of Z hop like 0.4mm should help solve the problem.