I've updated the editing handler zooming to be limited, so that when the stage is zoomed out too much (the axes aren't visible anymore) the handles won't be visible, either. It seems to be working ok this way, if there will be a need to customize this differently depending on the drawing we can add the parameters in the UI options. This update will be included in tomorrow's release.
We've also done some changes to the solver so that only specific points are changed, instead of all, and I'm currently working on the algorithm that sets which points should be changed. The solver updates won't be ready for tomorrow's release, but will be included in the next one.