Two weeks ago, I linked a sketch to a feature F1 of the feature trree.

Today, I erase the external relation of this sketch (btw, it would be very useful that the external relations of a sketch would be listed in a popping window)

I want also delete the feature F1 : impossible to do it !!!

Erasing F1 erases the sketch S1 and all feaures linked with S1 !!!

Instead of releasing new features for 2013, I suggest that the SW team begibns to fix the - really impressive - list of bugs and misbehaviours.