I can confirm this behaviour too. It seems to apply on images that are downscaled either with CSS or the width and height attributes of img tag.
-- Image rendered with border in Firefox When Scaling https://bugs.launchpad.net/bugs/274575 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
