EDIT: I’ve followed empireOfLove@lemmy.one 's suggestions and I have rerouted the bowden tube. Tomorrow I’ll start another print and see the results. I’ll report back.
Here’s the whole printer during that print…
https://files.catbox.moe/smtxlj.webm
…and here’s a detail image:
The printer is a Creality CR5 Pro HT running Klipper - although I doubt this is too relevant. The extruder is of the “push type” with the hotend only including the heated nozzle. Current speed is 70mm/s in the layers but at the moment of the video 35mm/s due to the top layer.
I have no idea why, with a relatively symmetrical print just this corner is so messed up and underextruded. Any idea would be nice.
Check your bed bearings. I had this happen when one of my bearings started to let go. I also found a deformation in the bearing channel, so I switched that unit to MGN12 rails and the issue went away.