How does one remove the duplicate console window from Firefox's built-in Firebug?

Question

I'm currently using Firefox 53.0 (64-bit), which comes with its own implementation of FireBug. Somehow I've ended up in a situation where a second, lower console pane displays under my main FireBug panel. (See the yellow area in the attached pic.) For my screen height, this takes up valuable vertical space that I don't have to spare. Is there a way to close the lower console pane? Thanks.

Answer 1

You can close the split console by clicking the related toggle button or by pressing Esc while the Firefox Developer Tools (so their official name) are focused.

Note: The reason why those tools look somewhat like Firebug is that they have a Firebug theme integrated. There's more information about this integration in the Mozilla hacks blog.