Any idea what might be going on with this print?

https://lemmy.world/post/39694833

Either your slicer is failing: try shifting the object a little or rotating it and slicing it again.

Or your Z axis has something happening at that spot. Try cleaning and lubing it and see what happens when you jog through that spot a couple times.

The fact it happened at the same z location twice is telling.

Try a slim vase-mode print that reaches past that height and see if it happens again.