I'm trying to move from Chrome Dev Tools to Firefox (27.0.1) for day-to-day debugging, however I keep hitting a problem in the inspector that can only be fixed by restarting Firefox.
The first time I load a page I get full access to the DOM, however on subsequent loads/refreshes I get this in the Inspector window:
Clicking the 'Show all 307 Nodes' button has no effect. Clicking On the collapse node button also has no effect. My Rules/Computed/Fonts/Box Model panels are all empty.
What can I do to fix this?