I set a shortcut for taking a screenshot of an area (gnome-screenshot -a) but whenever I press it it's an annoying game of cat and mouse to get the cross-hatch which lets you select the area to show up. When I just press the shortcut once the cross-hatch doesn't show up so I have to hold it down and watch the cursor flick between an arrow and the cross intermittently. When I stop holding it down it's no guarantee I "land" on the cross-hatch. It's a pain in the ass. How do I get it to respond correctly? This is a bit hard to explain, sorry.
Using gnome3, debian jessie.
shortcut made with gnome (system settings, keyboard, shortcuts, custom shortcuts)