Home page cascading style sheet problem (CSS)

Using Firefox, this 'bug' has been present for awhile, but I finally got around to taking a screen recording of it.

The way I can always recreate the bug is to click one of the comments links on the front page, then while holding the Command Button, click the left arrow (previous web-page) in the top left, and the MacRumors home page loads in a new tab, but without its CSS file.

Can anyone else confirm this, and a way to resolve/fix this?

Thanks!

YouTube link:

http://www.youtube.com/watch?v=M5As5bRQQTo

 

Hey arn, nope, my Firefox is set to clear everything out every time I quit it.