Created attachment 797136 [details] Examples of what is happening on my system--4 different images, and 1 video illustrating how the bug manifests. User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0 (Beta/Release) Build ID: 20130826142034 Steps to reproduce: In FF24: Used the keyboard to invoke a dialog [tabbed to the button element, and pressed space, or enter (both were tried) Used the mouse pointer to invoke the dialog [move the pointer to hover the button, and left-click] In FF25: Used the same keyboard navigation as above Note: I am a vision impaired developer, and tried this with the assistive technology on, and off. Actual results: In all cases, the dialog was rendered correctly, accept for the fact that extraneous pixels were rendered in [seemingly] random [I can't find a pattern] places, but only when the dialog was up--when hidden, the pixels disappeared, too. (see attached screenshot) Expected results: The dialog should've been rendered, as it is, accept without the pixels.
Created attachment 797141 [details] Appologies; I did not realise that having two attachments would backfire. Multimedia and code examples--JPEG, AVI and CSS/HTML/JS.
Attachment #797136 - Attachment is obsolete: true
Attachment #797141 - Attachment mime type: application/octet-stream → application/zip
It's a known bug implying AMD cards (confirmed by your screenshots like http://i.imgur.com/V0cqpc8.jpg)
Status: UNCONFIRMED → RESOLVED
Last Resolved: 5 years ago
Resolution: --- → DUPLICATE
Duplicate of bug: 837489
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