I was just wondering, did you manage to solve the issue?
Thanks for that link to the Reddit page. I’ve been having the same issue on the P1S. After hours of trying to figure this out over the last few months, I finally found the issue today after finding this post, checking out the Reddit post you linked, and taking another look for obstructions. The aftermarket filament guide that I printed for the top of the print head had come loose enough to stick up just enough to obstruct the movement in at least one of the corners, shifting the X-Y axis. So today, I printed my first successful multicolor print in months! Thanks again!