Created attachment 369286 [details]
Steps to reproduce the problem:
1. Open an attached url
2. Scroll a table header horizontally
What is the expected behavior?
A fixed white cell should remain in the same position
What went wrong?
A fixed white cell twitches (see the attached video)
Created attachment 369287 [details]
a test page
I am able to reproduce this issue with Safari in the simulator. When running the latest from the WebKit repository though, I cannot reproduce it. I think this might be fixed by one of the recent position:sticky improvements.