pop up diff display (e.g. in bug pages) of merge proposal exceeds entire window and is not scrollable (css brain damage)

[Don Kirkby]

1. I go to any page which contains embedded merge proposal infos - e.g. bug 505845
2. I click on the link to display the diff. On the example page, the link is in small green writing "308 lines (+219/-5) 5 files modified" at the bottom of the merge-proposal metadata.

I expect:
To see the difference displayed. I think it used to come up in a "window" overlaying the merge proposal.

What happens:
The difference is displayed, but something's wrong with the scrolling or positioning. I can't see the first 100 or so lines. On the example page, the first line I see is 135. I can't scroll any higher up.

More information:
I have tried this in Chrome 8.0, Firefox 3.6, and IE 8. They all have the same problem. I'm running them all on Windows XP.
I think this problem appeared some time in the last month.

[Thibault Lemaitre (thibault.lemaitre)]

I have the same with the bug 505845.
When I click on the diff link, I can see something like the both images attached to this comment. I can see its bottom if I scroll to the bottom of the web page, but I can't see its top. I also didn't find a way to close the diff "window" and return to the bug page.

I hoped to be able to scroll to see the top of the diff and to have a way to close the diff "window". It should also be great this window do not occupy to much area in the web navigator window's.

[Thibault Lemaitre (thibault.lemaitre)]

I forgot to mention : I'm using Firefox 3.6.13 of the Ubuntu repo.

[Don Kirkby (donkirkby)]

There is a workaround to close the diff "window" and return to the bug page. Just refresh the browser (F5 in most browsers). That reloads the page with the diff hidden.