It's a black screen. Same issue for me. It only happens if using the X11 screenshot interface:
** Message: Unable to select area using GNOME Shell's builtin screenshot interface, resorting to fallback X11. ** Message: Unable to use GNOME Shell's builtin screenshot interface, resorting to fallback X11. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1392053 Title: gnome-screenshot sometimes hangs leaving a transparent white square over the screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-screenshot/+bug/1392053/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
