I fix this issue by changing keyboard layout. (french keyboard)
1 - Menu System => Preferences => Keyboard
2 - Select Tab layout
3 - Click "Layout options..."
4 - Expand last option "Using space key to input non-breakable space character"
5 - Select the last choice "Usual Space at any level"
I know it's not system wide, just for the current user (well I suppose) but...
That's it.