Hey awesome ADS maintainers! Love the dock system—so slick. I ran into a scenario where floating (undocked) dock widgets stubbornly stay alive when their parent window closes. It’s weird UX: you close the app window, and see these dock orphans still floating around.

Steps to reproduce:

• Undock a dock widget so it floats in its own window.
• Close the main (parent) window that spawned it.
• Notice the floating dock is still visible and not closing—shadowing the parent window’s closure.

Expected behavior:
Closing the parent (main) window should also close or at least hide all its associated floating dock widgets, so you don’t end up with ghost windows lurking on your desktop.

Actual behavior:
Floating docks persist after parent window is closed—potential memory leaks, orphaned windows, or just plain confusion.