(2019-04-29, 20:57)Orion Pobursky Wrote: The odd thing is this doesn't happen when rotating with the edit pin or rotating a group of parts with the primary part not the control point.
I'll have to dive in the source to explain that in detail but the main difference is one applying a new absolute matrix while the pin applies a relative one.
The matrix math involved is open for many improvements as seen here
