After building the nightly (r30939) and running with run-launcher, WebKit opens and allows me to inspect an element. The first time I inspect nothing happens. Second time the inspector pane opens, but the page loaded in the inspector pane doesn't have any information in it besides a 3 buttons with no text, a text input and a bulleted list (documents, stylesheets, images, scripts, fonts, databases, other). There doesn't appear to be any formatting applied to the text, and there are no images, background or anything else appearing in the Web Inspector window. It doesn't matter what page I load when I inspect, same thing happens each time. I can post a screenshot if that would help, just email me.
Created attachment 19872 [details] Capture of the Web Inspector not showing anything.
Does this still happen? Was this WebKit Qt or WebKit GTK?
Closing since this is old and can't confirm the details with the originator.