Why my firebug hates Acid2 test page?

[abduraooft]

Hello,
I've somehow reached in to this page http://www.webstandards.org/files/acid2/test.html and then tried to use firebug after clicking "Take The Acid2 Test". But the graphic disappears the moment I click on firebug button. Please let me know the reason.

regards,

[GJay]

it's because it resizes the viewable area of the window- if you resize the window with the button at the top-left/right of your browser, the same thing happens.

[abduraooft]

Really? The same happens even when I open the firebug in new window :eek:
(Is it due to the blue border of the element being inspected?)