In Mac FF 28 / Firebug 1.12.8, in the Scripts panel while debugging, I can pull down a menu to show me the relevant documents (the current HTML file, plus JS files linked to it). It works fine.
In MacFF 32.0.2 / Firebug 2.0.4, that pulldown menu is borked. The most prominent things in it are two absurdly wide (wider than my monitor) horizontal lines about Ghostery, one of the extensions I've installed. In humongous bold type:
gre/modules/addons/XPIProvider.jsm->jar:file:///Users/.... etc etc....
/extensions/firefox@ghostery... etc. etc. Why would I want to see this? I'm not debugging Ghostery! It stretches that menu absurdly and overwhelms the display of the "real" files (mine).
BTW, I have that exact same version of Ghostery (5.4.0) installed in
both FF/FB setups, and it doesn't show up in that menu at all in Firebug 1.12.8.
Another (less important) issue is that the file names are all displayed in ordinary type, with a checkmark in front, but the directory names are displayed above each file in huge bold type. Like this: