Just a minor bug that's easy to reproduce:
1) Draw any Live Shape, e.g a rectangle.
2) Right-click on any anchor point in the shape and select "Delete Anchor Point". Note that this does not affect the "Delete Anchor Point" tool!
3) Move or transform the shape in any way.
Photoshop will restore it to its original form (i.e add back the deleted anchor point(s)) since it still thinks it's a Live Shape.