See here:
See the section plane in top view. I wanted to move the top arrow along the section plane (=upwards).
The Gumball is in Gumball (World) mode. Not the Gumball when the object is selected. It is slightly not aligned with the section plane. This is correct.
Now on the lower A part of the ClippingPlane the Gumball (World) has the same alignment when picking that point.
But on the top A part of the ClippingPlane the Gumball (World) has the same alignment as the section.
Also the axes are differently oriented.
When using Gumball (Object) all three ClippingPlane “handles” are correctly oriented with the object.
I do think you have a tiny BUG here.
(Also, as an architect, “ClippingPlane” is such a misnomer. I have to rephrase my writing all the time. I just want to name it “Section” or “Section Plane”)
/Erik