I tried to add a shortcut (CMD-Shift-3) as shortcut for the "Projects" window in Xcode. But when I try to do this via Preferences->Key Bindings, I can't realise this. Because it's interpreted as CMD-# (with EN/US keyboard layout, or CMD-§ with DE layout). To make it even worse, I accidentally changed the "Devices" shortcut (trying to copy it). And as there is no "reset to default" on a single shortcut, it's lost.
I can't believe this is actually behaviour implemented by Apple.
Details: OS X 10.10.3 Xcode 6.3.2
Thanks in advance!