New sizing handles make it very difficult to move point objects.

There are several places in my game where I use objects that are only points without a size. Since 0.12.0, moving these have become extremely difficult because the sizing handles cover the entire rectangle. Zooming in gives me enough room to select the object but its still a significant usability issue.

Reproduce issue #950 in the Tiled editor using point objects, especially at normal and zoomed-out levels, and observe how the sizing handles affect selection and movement. Done means point objects can be selected and moved reliably without the handles covering the usable target area.

Written by the indexing model from the issue text.