It's a firefox bug. I needed to add a very fine rotation for it to render subpixel, so you can try again. You can also see the repaints if you open up the dev t

It's a firefox bug. I needed to add a very fine rotation for it to render subpixel, so you can try again. You can also see the repaints if you open up the dev tools: https://i.imgur.com/A8btxpu.png https://i.imgur.com/A8btxpu.png