Created attachment 117984 [details] What it appears like Rotated horizontal line displays incorrectly. When rotating a horizontal line, a 1px thin solid gray line appears alongside the intended line. This happens regardless of the intended line's style, or weight. Rotated using CSS "-webkit-transform: rotate(30deg);". Can be replicated in all Google Chrome releases.
Do you have a test case that you could attach, or link to?
Created attachment 118094 [details] URL of HTML & CSS contained in a ZIP archive
The appearance of the content with and without rotation is identical bar aliasing in WebKit Nightly: Version 5.1.2 (6534.52.7, r110761)