Tabs opened from about:blank causes Firebug to stay opened

[klenium]

// ==UserScript==
// @name newtab
// @include about:blank
// ==/UserScript==
document.body.innerHTML = '<a href="http://google.hu/" target="_blank">Click!</a>';

1. Open Google from about:newtab.
2. Press F12. OK, Firebug is opened.
3. Press F12. OK, Firebug is now closed.
4. Switch to another tab.
5. Switch back to Google. Firebug is opened, when it should be closed.

When I press Ctrl+T and type google.com, or disable Greasemonkey and open Google from the Firefox's default newtab, Firebug stays closed.

[janekptacijarabaci]

Not confirmed on:
GM 3.4beta1
Firebug 2.0.11
Firefox 40.0.2 and 43.0a1 (2015-08-22) - e10s: off (e10s: on - Firebug: stable version don't work)

[klenium]

It works for me too right now. As I remember I used Firefox 39 and GM 3.1, Firebug ~2

[klenium]

Try the same steps ablove, but instead of minimizing, close Firebug.

[janekptacijarabaci]

Not confirmed on:
GM 3.1
Firebug 2.0 (and 2.0.11)
Firefox 39.0

If ever something does not work out:
Try it on a new profile where there are no addons except e.g. Firebug/Greasemonkey (disable every addon you have except e.g. Firebug/Greasemonkey).

[klenium]

https://youtu.be/2o5JSxrx8z4
Firefox 40.0.2 Firebug 2.0.11 Greasemonkey 3.3

[janekptacijarabaci]

Oh, I see it.
Unfortunately, I don't get it that way...
Well, that's okay :-)

[janekptacijarabaci]

But, this has nothing to do with Greasemonkey...

Greasemonkey uninstalled. And:

When you add the element:
<a href="http://google.hu/" target="_blank">Click!</a>
to about:blank page (manipulation of DOM objects using Firebug / Web console), the problem remains unsolved.

Perhaps this is a problem in Firebug, since Web console itself does not do this.