Ahhh, I see what you mean.
If you move the origin of that UI just a little in any direction, it will orientate it along the plane that the sketch is on. Then you just need to move the origin back to the geometric center that it originally had.
The problem is that there isn’t a snap point for the center- but as long as your zoomed in, it shouldn’t be too difficult to bring it back.
I can make a video if needed 