Slicing results in lots of small extrusions instead of gapfill (which clogs extruder)

[jurriaan]

Version

Latest master (g40e4be6ed) and 2.2.0 release version

Operating system type + version

Linux 5.6.4-zen1-1-zen #1 ZEN SMP PREEMPT Mon, 13 Apr 2020 12:21:24 +0000

3D printer brand / version + firmware version (if known)

Prusa i3 MK3s

Behavior

The object is wrongly sliced with lots of small extrusions instead of a gap fill at a certain point (8mm, layer 40 in case of this example). This made the print fail on my printer due to clogging of the extruder.

If I enable 'detect thin walls' the same issues occurs, but at a different location (3.4 mm, layer 17)

And with 'detect thin walls' enabled this is the result:

Project File (.3MF) where problem occurs

3mffile.zip

[rtyr]

Similar to #2666, #1806, #1723, #3822, etc..