Created attachment 69779 [details]
We've seen some strange flickering occur in Safari (and latest WebKit nightly), where on one of our sites the logo started flickering while -webkit-transitions were performing somewhere on the page. The issues doesn't exist with Chrome. We've created a striped down example which reproduces the issue.
In the test case, hover over the boxes labeled "1" and "2" to start transitions. While the transition is performing, the green box at the bottom is flickering.
We've only encountered the issue with a combination of position (absolute), z-index (not equal 0) and the value of the text-indent (in the test case case lower than -1800px or higher than 1877px) of the h1.
Test case is attached.
You should always combine text-indent: -hugeval with overflow:hidden.
The huge text-indent causes a tiled layer. Tiled layers are known to flicker.
*** Bug 44110 has been marked as a duplicate of this bug. ***
I can't reproduce this anymore with the attached test case on Safari Version 6.0.1 (8536.26.14, 537+) r130635. Resolved?