Thanks for spending time to let me know because I don't think I would have noticed it otherwise! I can't see it on retina but I can on my non retina display. We'll have to make the CSS rule more specific. As to why it's there I believe Firefox 57 or around that version had an issue with the sliding animation on the top of the page causing images to tear or not render at all when they scrolled in. This bug must have been solved recently because disabling backface-visibility on the image doesn't cause the same tearing.
exikyut|7 years ago
And you can repro :) cool. Makes a lot of sense you can't see it on retina.
Interesting FF bug you hit. CSS3 GPU-accelerated animations are incredibly complex... heh, adding the rule fixed Firefox ~57, but now Chrome 68 is glitching out because the rule is there. I wonder if Google realizes yet. Ponders complexity of creating minimal testcase, versus waiting for someone else to notice :P