1952063 - Uncached Mastodon videos look plain green only on Firefox aarch64 Windows

Status: REOPENED

(Core :: Audio/Video, defect)

Description

[Kagami Rosylight [:saschanaz] (they/them)]

Attachment: The video shows only plain green

1. Open https://peoplemaking.games/@eniko/114111996111205260 (and make sure to not hover on the video)
2. (Optionally trigger full reload by Control+F5 if the first frame loads properly)
3. See the video properly shows the first frame
4. Scroll through https://peoplemaking.games/@eniko/media and see whether any GIFs are rendered properly

Mysteriously this doesn't happen on x86-64 Firefox nor on arm64 Chrome. It only happens on aarch64 Firefox (2025-03-05 nightly, 2024-03-05 nightly, and 135.0.1 stable).

Comment 1

[Kagami Rosylight [:saschanaz] (they/them)]

Attachment: The media list where GIFs look plain green

Comment 2

[Kagami Rosylight [:saschanaz] (they/them)]

And it works today, I wonder it was a system issue that's somehow fixed by Windows?

Comment 3

[Kagami Rosylight [:saschanaz] (they/them)]

Okay, this works sometimes and does not other times. It's unstable somehow.

Comment 4

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

The severity field is not set for this bug.
:jimm, could you have a look please?

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