I'm experimenting with some fur that is driven by hair curves, and ran into this strange problem. When the animation is played in the viewport, nothing can be undone afterwards.
Hitting undo gives me this:
// Undo: HfExportThreshold |PolarBear_Ref_A_FurFeedback|PolarBear_Ref_A_Polar Bear_FurFeedback|PolarBear_Ref_A_PolarBear_FurFeed backShape.exportWrapThreshold //
Nothing happens, and after that nothing can be undone. It just says:
// Undo: // // Undo: // // Undo: // // Undo: //
All the PolarBear_Ref_A_FurFeedback stuff is just groups to get to the shape node, and I don't know what exportWrapThreshold does when you hit the play button, but it is screwing up my undo queue. Any ideas?