Ctrl+F12 is known to be the keyboard shortcut to switch between slim and wide page view.

Unfortunately Ctrl+F12 does not work in all situations. If you run a page by Page.Runmodal the shortcut does not work.

In the user interface you can't tell by looking at a page, which way it was started. So to the user this behaviour is inconsistent and iritating.

Even more as the button to switch between slim and wide page view is available and working.

Please make Ctrl+F12 available to pages run by Page.Runmodal to increase a consistent user experience.