1763815 - Animated SVG-as-an-image (e.g. in favicon or img) is not working properly, with about:config pref image.svg.blob-image set to true

Status: NEW

(Core :: Graphics: ImageLib, defect)

Description

[nayinain]

Attachment: testcase.html

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:101.0) Gecko/20100101 Firefox/101.0

Steps to reproduce:

1. Open the testcase.html.

Actual results:

Animated SVG favicon is not working properly

Comment 1

[nayinain]

Attachment: Capture.webm

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

Set release status flags based on info from the regressing bug 1763643

Comment 3

[BugBot [:suhaib / :marco/ :calixte]]

:aosmond, since you are the author of the regressor, bug 1763643, could you take a look?
For more information, please visit auto_nag documentation.

Comment 4

[Timothy Nikkel (:tnikkel)]

image.svg.blob-image=true also makes the swipe to nav arrows on mac (and presumably Windows nightly as well) very flickery. This is a simple static svg that we animate the css opacity of from js.

Comment 5

[Markus Stange [:mstange]]

I've filed bug 1764602 about the swipe issue because I'm not convinced it's the same. The animation is "outside" the image in bug 1764602.

Comment 6

[Daniel Holbert [:dholbert]]

This affects SVG-as-an-image in other contexts as well (with internal animations), as shown in e.g. bug 1763873, which is just <img src="some SVG that uses animateTransform">

The testcase on that bug as well as this bug go away if I toggle image.svg.blob-image to false, and they come back if It toggle it back to true. (no restart or page-reload required; the problem disappears/reappears right away with the pref flip)

Comment 8

[Ryan VanderMeulen [:RyanVM]]

Disabled by way of bug 1766333.