This complaint is similar to desktop icons not maintaining their position when you change desktop resolution. It requires far more work than changing the way the backend handles shortcut keys (to fix the menu bug), and doesn't improve most people's experience.
I'm not saying you're wrong! This is a legitimate problem! I'm simply saying that it's not a priority, similar to how it's not a priority for Apple to expose a user interface to customize the button layout on their windowing engine, or fix their dock to work properly in vertical mode. All projects have priorities, open source and closed source, and this bug doesn't seem very important to me.