I usually take screenshots printscreen which calls into gnome-screenshots. Today I noticed that it doesn't work when the context menu is open. The simplest case is when I right click on desktop and press printscreen nothing happens. Is this some sort of bug? Any knows how to fix this?
That's a known problem i guess , it happens in KDE as well.
But if you want screenshots when menu is running , you can switch to command line tools , or set a timeout.
Command line , e.g delay for 5 seconds :
For ksnapshot , you can delay for seconds , and then take a shot.
It's not exactly a bug, it's just that the gnome screenshot doesn't have this feature.
Other tools, like Shutter, can do it.