There is an annoying bug in the entity selection and edit process. Sometimes (most of the time) the resize blocks on the corners and edges of the entity bounding box dont behave as they should 90% of the time.
Step one: turn on edit.
Step two: select an entity
Steps three to fifteen: try to make one of the little black dots on the corners go red so you can resize.
They are largely unresponsive, they simply ignore the mouse over, this system whatever it is, doesnt always work, it is hopelessly unreliable, I can spend 5 minutes trying to make this stupid little block turn red until my face turns red. I have to move 3 or 4 times just to click these things.