WebRender atlas corruption (missing letters on github.com).

[eddyb]

After scrolling a bit on the GitHub landing page, I ended up in this state:

I don't know what to make of it, other than the obvious missing letters and right side looking like a portion of the atlas - you can see at the bottom, the hamburger and magnifying glass icons, from browser.html.

[Manishearth]

cc @glennw @pcwalton

I've sometimes seen similar font atlasing issues on browser.html, where strings like "Google" become "Goog e" in the browser.html url bar

[jdm]

Might be related to #10020.

[Manishearth]

This is google. I can't find the broken atlas pieces on the page though; so it might not be the same bug.

[paulrouget]

Maybe servo/webrender#253 improved the situation (at least for the weird gradients).

[Manishearth]

Still occurs with patch applied

[Manishearth]

Typing two ls results in a single darker l coming up. I suspect that the offset is just a bit off (and kerning in the two-l case makes it shift back a bit)

[nox]

I can't reproduce this anymore.