Shearing mess up bounding box annotation, Polygon is fine

Here you can see in my project (KTP Scanner Object Detection Dataset by TimeSpace Universe) there are 2 versions: rotation only and shearing only. Both have auto-orient on.

In rotation only, everything is fine. But in shearing only, image with bounding box got screwed up, however image with polygon is fine.

It would be really nice to be able to annotate with bounding box without having to worry about these things. Thanks in advance.