1686458 - bullets for list items shifted, distorted, cut off or missing

Status: RESOLVED FIXED

(Core :: Layout: Generated Content, Lists, and Counters, defect)

Description

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

Attachment: screenshot of isssue

Firefox 86.0a1 20210113100240 on Windows 8.1

The issue reproduces in one Nightly profile but not in another. Ctrl+F5 to force the reloading of the resources doesn't fix it.

Bullets for list items e.g. at https://wiki.mozilla.org/Main_Page and https://wiki.mozilla.org/Sheriffing/How_To/Getting_started_as_a_sheriff are either missing or cut off/distorted (look more like rectangles).

Bisection confirms it as regression from bug 1685078.

Comment 1

[Emilio Cobos Álvarez (:emilio)]

Huh, I don't see this happening on Linux... Do you have WebRender enabled or disabled? Could you attach about:support?

Comment 2

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

Attachment: webrender-disabled about:support

Yes, webrender is not enabled and I don't know why (all preferences containing webrender have the same value like the profile where webrender is shown as enabled and for which about:support will get attached in a few moments

Comment 3

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

Attachment: webrender-working about:support

Comment 4

[Emilio Cobos Álvarez (:emilio)]

Is layers.acceleration.disabled different in these?

Comment 5

[Emilio Cobos Álvarez (:emilio)]

Anyhow I can repro with WR disabled and zoom. Will take a look.

Comment 6

[Emilio Cobos Álvarez (:emilio)]

Attachment: Bug 1686458 - Fix anchor point in bullet image painting. r=jrmuizel

WebRender seems to ignore aAnchor completely. Maybe we can remove it,
but will do that in a separate bug.

I'll try to come up with a reftest, though it seems to be dependent on
DPI which makes it a bit trickier.

Comment 7

[Emilio Cobos Álvarez (:emilio)]

(To add a test when I find some more time)

Comment 8

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/7eaed23432d7
Fix anchor point in bullet image painting. r=jrmuizel

Comment 9

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

https://hg.mozilla.org/mozilla-central/rev/7eaed23432d7