Problem description: 

Steps to reproduce:
1. Create an Arc shape/Double arrow will do either
2. Right click, select ,,Position and size''
3. Rotate it by 90 or 270 degree by clicking the ,,star'' => Lags
4. Try to select it by frame

Current behavior:
=> you have to draw the Frame much bigger than the shape
Expected behavior:
=> It should be enough at least if the square around the theoretical outer circle is inside the selection frame, better just the ,,used'' part of arc if its an small part of the arc.

Platform (if different from the browser): 

Win XP
              
Browser: Mozilla/5.0 (Windows NT 5.1; rv:12.0) Gecko/20100101 Firefox/12.0