Hi Peer,

re:
> It also might be nice if the tangent circle closest to passing through the 3rd pointpicker would
> always be drawn even if the cursor is in an invalid area.

Sorry I'm not understanding this part.

Basically the circle tangent solver doesn't like to be given coincident points. Internally it's trying to generate a circle through 3 points which is undefined when the 3 points are collinear or coincident.

Happy new Year!

- Michael