When I use dialogs it happens that I have to edit a dialog (SubVI) and its caller at the same time (an example is attached). Suppose both VIs are opened. If I want to test a caller and if I run it a dialog (Sub VI) will also run. It's not possible to control any of them anymore.
The shortcut CTRL+. does not work. Emergency VI aborter neither. The most popular Microsoft key combination CTRL+ALT+DELETE works, of course. Fortunately LabView recovery procedure also works reliably.
LabView development environment should allow to abort any VI: modal or non-modal window. Project explorer window should always be available.