Pure Virtual Function Call error when deleting layout generator shape

When deleting a polygon from a Layout Generator Layout View, World Machine crashed with error message “Pure Virtual Function Call”. See attached screenshot.

I was not able to reproduce this crash.

Version
World Machine 3.build3016 Professional Edition 64-bit

I got too many crashes manipulating shapes using the Layout view. I am not sure if we can expect any feedback from the WM team on those…