Filament unload doesn't work during multi color prints - works fine all other times
So I have a strange issue with my MK3S. Normally the filament loading and unloading works perfectly, but when I do a 2 color print using prusaslicer and it gets to the "Press Knob to Unload Filament", nothing happens. I press the knob and there's no change, message stays and it keeps beeping... I have to restart or hard power reset the machine.
But when I hard restart and it goes to recover the print, it goes back to "Press Knob to Unload Filament" and this time pressing the knob releases the filament like normal.
Is this some sort of software bug? It's hard to see how it can be a hardware failure if the unloading/loading works fine the rest of the time, and simply after restarting it.
Would rather not disassemble to check the filament sensor If I don't have to since it doesn't seem like it's the issue. Any ideas?