Opening a window doesn't disable ShortcutListeners on parent view


I’ve just updated from Vaadin 7.3.8 to 7.6.1. I now have a problem on all my Views in that whenever I open a Window, the ShortcutListeners on the buttons on the parent view no longer get disabled while the Window is open. If I try and type in a text field on the Window, all the Button shortcuts start firing. How do I get the previous behaviour back, so only the shortcut listeners in the window work, and not the shortcuts on the parent view?

Edit Using Vaadin 7.5.10 fixes this problem, so maybe a bug in 7.6?