https://bugzilla.kernel.org/show_bug.cgi?id=85421
--- Comment #8 from Michel Dänzer michel@daenzer.net --- (In reply to Alan from comment #7)
Reproducable case seems to be using firefox to review/edit an object you've uploaded to Shapeways. Another one is to load a fairly curved shape into OpenScad and hit F5 to view then rotate it.
Those seem sufficiently different from the scenario described in this report that they should be tracked separately.