Firefox - Thumbnail images disapearing

This issue respects the following points:

[X] This is a bug, not a question or a configuration issue; Please visit our forum or chat rooms first to troubleshoot with volunteers, before creating a report. The links can be found here.
[X] This issue is not already reported on GitHub (I've searched it).
[X] I'm using an up to date version of Jellyfin Server stable, unstable or master; We generally do not support previous older versions. If possible, please update to the latest version before opening an issue.
[X] I agree to follow Jellyfin's Code of Conduct.
[X] This report addresses only a single issue; If you encounter multiple issues, kindly create separate reports for each one.

Description of the bug

On the main view of jellyfin-web, when I refresh and/or scroll thumbnail images randomly disappear (when I scroll down & up again few times, or after a couple of refreshes, they usually come back) I've seen some other issues like #9937 but that doesn't seem to be the same behavior

Reproduction steps

Sign in to jellyfin web client with Firefox
See missing thumbnails
Scroll down & up few times, they might come back (or partially, or disappear again..)

What is the current bug behavior?

Existing thumbnails aren't always displayed

What is the expected correct behavior?

Existing thumbnails should always be displayed

Jellyfin Server version

10.10.0+

Specify commit id

No response

Specify unstable release number

No response

Specify version number

No response

Specify the build version

10.10.0

Environment

- OS: Desktop Windows 10 - Server Debian 12
- Virtualization: Docker
- Clients: Browser
- Browser: Firefox 131.0.3 
- Plugins: Fanart, TMDB, OMDb, TheTVDB..
- Reverse Proxy: caddy
- Base URL: none

Jellyfin logs

No relevant log

FFmpeg logs

No response

Client / Browser logs

No relevant log when that happens (i.e if after a refresh the dashboard all images are displayed, I then clear the logs, and the scroll down/up to make thumbnails disapear, logs are still empty)

Relevant screenshots or videos

This is how it looks: But when I inspect the element the image does exist (but is strikethrough)

Additional information

It doesn't happen on other clients afaik (for example no issue with Jellyfin Desktop or Chrome) And it seems very random, it can happen on basically any thumbnail on the homepage (movie/show/collection/continuing/etc)

jellyfin / jellyfin-web