Problem with skipping back extruder
I want to ask, if someone knows, what causes this. It is happening during part of printing, when filament is extruded continuously (e.g. longer lines during base of print). Filament is not in tension, and extruding nozzle change was done (of same size).
[video width="1280" height="720" mp4="https://forum.prusaprinters.org/wp-content/uploads/2020/07/PrusaProblem.mp4"][/video]