I think there is an issue where Window onKeyEvent is taking precedence over MenuBar Item's KeyShortcut.
I have a MenuBar Item with KeyShortcut(Key.V, meta = true), but it's not being triggered because my Window onKeyEvent is handling Key.V for another action.
I think that's not right, in other toolkits that I've worked with the key shortcuts take precedence (e.g. Qt has a QEvent::Shortcut, but if the focus item needs to override it it has QEvent::ShortcutOverride
https://wiki.qt.io/ShortcutOverride)