I'm having some strange display problems with Firefox Developer Edition 41.0a2. Simply put it looks like Firefox is not reading it's own .CSS file. I have two machines on different networks and different methods of accessing the internet. Both installs of the dev edition are exactly the same (as far as I can tell) yet on machine "A" I get background colors and photes and on machine "B" the background colors and photos are not rendered.
I first noticed this when looking for an add-on. Clicking the menu > Add-Ons > Get Add-Ons the resulting page was mostly white space with almost no styling. An example of this lack of backgrouind colors etc. can be seen below. Anyone know what's going on here? Will appreciate your suggestions for a fix.
