There are two actions (Auswahlwerkzeug, Abstandwerkzeug) that want to use the same shortcut (). This is most probably a bug.
You can only use the same sortcut for 1 command. Not clear what you really mean.
*** Bug 379745 has been marked as a duplicate of this bug. ***
It seems the problem is solved. We closed this bug. If it still appears in the latest version, please feel free to re-open it and update the affected version number.