Gumball Extrude does not obey CreaseSplitting setting

If you have CreaseSplitting set to disabled, using ExtrudeCrv on a kinked curve such as a polyline will produce a single kinked surface. However, extruding with the Gumball extrude handle will split it automatically into a polysurface, despite CreaseSplitting being set to disabled.

V8 and all earlier versions…