Hi Pilou,

> because use frame selection is sometime not necessary
> and hide that is behind :)

This is the reason why the frame is very sparse (no connecting lines to make a box outline for example).

Also the frame corners should be partially transparent and not totally obscure the background behind them until you move the mouse directly over a grip. Is this function not working properly on your machine?

Under normal circumstances these properties of the frame should help to keep it out of the way and avoid obscuring objects behind it.

- Michael