Sensorless Homing appears to be broken on TMC2209's

General Discussion
9

I just watched your video, and it’s not doing what you described. What’s happening the second time you home is the diag pin is triggering instantly for both X and Y, and the printer is then trying to move to the middle of the bed to home Z. It looks to me like you need to slow down both X and Y, and better tune the sgthrs values so they’re not overly sensitive.