Service worker for authenticated media is not reliable if using multiple firefox containers with develop.element.io/same domain -> 404 returned for media

[MTRNord]

Steps to reproduce

1. Have authenticated media on the server
2. Have multiple elements of the same url in different firefox containers
3. Try downloading an image

This isnt super reliable but I am not entirely sure about the conditions

Outcome

What did you expect?

It works just fine

What happened instead?

Sometimes one of the tabs ends up with unable to download media. The request throws 404 instead of using authenticated media. Unlinking the service worker and reloading fixes the tab but breaks the other tab.

Operating system

Fedora Silverblue 40

Browser information

Firefox 129.0.2 (64-Bit)

URL for webapp

develop.element.io

Application version

Version von Element: f937dea-react-78059e1ca656-js-ba7bd0629541 Krypto-Version: Rust SDK 0.7.1 (c8c9d15), Vodozemac 0.6.0

Homeserver

matrix.midnightthoughts.space

Will you send logs?

Yes

[turt2live]

Logs from both containers will be important for resolving this.

[MTRNord]

Logs from both containers will be important for resolving this.

Since I now encountered this again, I sent logs via rageshake for this issue. I hope that helps. One for the affected and one for the non affected container. There is some more info attached to the rageshakes.

[ledlamp]

friend is having random media fail to load (M_NOT_FOUND) on plain old firefox on windows 10, app.element.io and matrix.org, not even using this container thing