The keymap system is a strange thing anyway, but with a German keyboard there are two issues that are really annoying:
Navigating to braces is impossible, because it's supposed to be Ctrl+OpenBracket, which according to the keymap settings is Ctrl+Alt+7 and therefore isn't recognized. It is not configurable via the keymap!?
- Any keyboard shortcut involving the right Alt key ("Alt Gr") is recognized as Ctrl+Alt+key in the keymap but is not recognized when pressed afterwards in the application.