Terminator 0.95 (running on Debian stable under Gnome) has shortcuts for "Spawn a new Terminator process" and "Create a new window". However, when I set them (to several different options, in case there is a conflict) and try to use, instead of a new window I get a lightbulb in the header of the current tab. There are no error messages in the terminal I am running Terminator from, but looking again at keybindings, the shortcuts become disabled. Trying to use the shortcut without closing the preferences window didn't work either.
What does it mean and how can I avoid it?