Many context menus grab keyboard input, and therefore block app shortcuts. Launching "Screenshot" manually from the application menu (or via command line) will allow you to define a delay before capturing.
http://manpages.ubuntu.com/manpages/bionic/man1/xfce4-screenshooter.1.html ** Changed in: xfce4-screenshooter (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1735714 Title: Ability to take a screenshot when a menu has focus To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xfce4-screenshooter/+bug/1735714/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs