# YouTube URIs fail to render thumbnails when oneboxed

**URL:** https://meta.discourse.org/t/youtube-uris-fail-to-render-thumbnails-when-oneboxed/387673
**Category:** Bug
**Tags:** composer, onebox
**Created:** [November 5, 2025, 2:07pm UTC](https://meta.discourse.org/t/youtube-uris-fail-to-render-thumbnails-when-oneboxed/387673 "2025-11-05T14:07:47Z")
**Posts on this page:** 1
**Showing post:** 5

<div class="post-metadata">

### Author: ![roke\_julian\_lockhart](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/roke_julian_lockhart/32/540179_2.png) [@roke\_julian\_lockhart](https://meta.discourse.org/u/roke_julian_lockhart)
#### Post date: [November 6, 2025, 3:44pm UTC](https://meta.discourse.org/t/youtube-uris-fail-to-render-thumbnails-when-oneboxed/387673/5 "2025-11-06T15:44:43Z")

</div>

> [@martin](#):
>
> Are these links not rendering properly on your own site, or just not here on Meta?

@martin, _some_ others, too:

#### Non-Shorts

With [`https://www.youtube.com/watch?v=Cs3sTnLO6EE&lc=Ugyi1VtrCVd2POTc82N4AaABAg#:~:text=A%20Screencast%20Of%20LinkedIn%20Persona%20Verification%20Failure`](https://www.youtube.com/watch?v=Cs3sTnLO6EE&lc=Ugyi1VtrCVd2POTc82N4AaABAg#:~:text=A%20Screencast%20Of%20LinkedIn%20Persona%20Verification%20Failure), this reproduces at:

1. 
#### [`discuss.kde.org/new-topic`](https://discuss.kde.org/)

 ![](https://global.discourse-cdn.com/meta/original/4X/b/0/7/b07e282cdb997433ed4d612ede1b2ef24a03b5f3.png) \[1\]

2. 
#### [`forum.fairphone.com/new-topic`](https://forum.fairphone.com/new-topic)

 ![](https://global.discourse-cdn.com/meta/original/4X/6/1/a/61a5025a59c8e2b43ebd4625cc84be535981f846.png) \[1:1\]

However, at [`discussion.fedoraproject.org`](https://discussion.fedoraproject.org/new-topic), it renders:

 ![@{'Date'='20251106T154007+0000'; 'Type'='Photo'; 'Origin'='Fedora Discussion - Fedora Linux and Fedora Project community conversation. — Mozilla Firefox'}#](https://global.discourse-cdn.com/meta/original/4X/c/2/e/c2e0ab4ae9300bd6cef5ce440678d0e1f3530b13.png) \[1:2\]

#### Shorts

> ****
>
> With [`https://youtube.com/shorts/Cs3sTnLO6EE`](https://youtube.com/shorts/Cs3sTnLO6EE), the undermentioned is reproduced:
> 
> > [@Youtube links don't show preview anymore](https://meta.discourse.org/t/youtube-links-dont-show-preview-anymore/159755/1):
> >
> > our forum doesn’t show the preview image on a Youtube video anymore. It only shows a link that
> 
> …at:
> 
> 1. 
> #### [`discuss.kde.org/new-topic`](https://discuss.kde.org/)
> 
> ![](https://global.discourse-cdn.com/meta/original/4X/3/3/7/3379de6477d1a7017a68aa6655c4d11c8eb7029e.png) \[1:3\]
> 
> 2. 
> #### [`forum.fairphone.com/new-topic`](https://forum.fairphone.com/new-topic)
> 
> ![](https://global.discourse-cdn.com/meta/original/4X/8/9/e/89eea15f4f76a91d6625844fc0ecf7e5fa3e6eb6.png) \[1:4\]
> 
> However, as before, at [`discussion.fedoraproject.org`](https://discussion.fedoraproject.org/new-topic), it renders:
> 
> ![@{'Date'='20251106T154119+0000'; 'Type'='Photo'; 'Origin'='Fedora Discussion - Fedora Linux and Fedora Project community conversation. — Mozilla Firefox'}#](https://global.discourse-cdn.com/meta/original/4X/f/3/4/f344acfdbe0afc5c56ae4f29d07f8929df30a324.jpeg) \[1:5\]

What are Fedora doing so correctly?

* * *

1. [`bugs.kde.org/show_bug.cgi?id=511477#c1`](https://bugs.kde.org/show_bug.cgi?id=511477#c1:~:text=2025%2D11%2D03%2021:06:27%20GMT-,Duplicates%20https://bugs.kde.org/show_bug.cgi?id=510982%23c2.,-***%20This%20bug)

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