User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0 Build ID: 20180531101452 Steps to reproduce: Visit https://www.futureportprague.com/ Take a closer look at the nav menu. There's an image attached to show the problem. Actual results: The font is not smooth, there are lines over the characters. Looks like it's not drawing properly. Expected results: The font should be smooth. * The problem is not the font or some CSS. Looks like this only happens inside tag <ul> or <li>, others elements are not affected. I can reproduce this on Firefox Stable and Nightly. I'm running Ubuntu 18 with Gnome.

I can't reproduce on Windows 10.

Markus, this seems like it might be a case with layerization where something that should be disabling subpixel AA is not? Ideas?

Reproduced in 60.0.1 (64-bit), Ubuntu.

I can also reproduce the issue on win10 Nightly62.0a1 x64 if HWA is disabled.

Regression window on Windows: https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=024e7dc7a219e3f276bc2245746bbad67a574ea9&tochange=209072396aa5ab5c5a0a28109a980dbbcd884922 Regressed by: 209072396aa5 Mason Chang — Bug 1007702. Enable skia on unaccelerated windows. r=lsalzman Regression window on Linux: https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=01748a2b1a463f24efd9cd8abad9ccfd76b037b8&tochange=a551f534773cf2d6933f78ce7d82a7a33a99643e Regressed by: d0910ce4cff8 Lee Salzman — Bug 1278957 - enable Skia content for Linux and Android. r=mchang