>>> My Info: Win7_64, Nightly 49, 32bit, ID 20160526082509 STR_1: 1. Open attached "testcase 1" 2. Look precisely at "i" icon and "book" icon (use color picker to zoom in) STR_2: 1. Open https://github.com/Reviewable/Reviewable/issues/360 in maximized Firefox window 2. Make sure that vertical scrollbar is visible. 3. Look precisely at "i" icon inside tab "Issues" (use color picker to zoom in) AR: "i" icon is clipped at the left side and blurred, because it's shifted horizontally by ~0.5px ER: The icon shouldn't be clipped and blurred, just like on GoogleChrome Note: 1) Actually, attached "testcase 1" shows both kinds of shifting of SVG images: horizontal and vertical Remove corresponding styles in element style[class="bad"] to remove horizontal or vertical shifting 2) On Github you can only see horizontal shifting. 3) With HWA enabled first 2 containers in testcase still show blurred "book" icon even after removal of style[class="bad"] completely, because word "issues" has fractional width. 3rd container reliably shows good icons if you delete style[class="bad"]