KeyCharacterCombination matches only one of the possible keys producing the character. If, for instance, a KeyCharacterCombination with "+" is created, it should match both the key-pad and num-pad "+" keys.
is blocked by
JDK-8089373Translation from character to key code is not sufficient
JDK-8087486[Glass, Linux, Mac, Monocle] KeyCharacterCombination matching for tab and newline is broken
JDK-8087700[KeyCombination, Mac] One key event sent on Mac versus two on Windows