In Piwigo 14.x and its new album editor, I see an example of very blurry album thumbnail.

<img width="807" alt="Screenshot 2024-02-02 at 11 00 41" src="https://github.com/Piwigo/Piwigo/assets/9326959/58528623-c000-4477-8bf3-3f10f441877f">

After investigation, I've found that it's an upscale of the thumbnail photo size. That's because sizes S, XS and XXS are disabled on this Piwigo.
[14.x album editor] blurry album thumbnail
This is a GitHub Issue
repo:Piwigo
owner:Piwigo
Title : [14.x album editor] blurry album thumbnail
Issue date:

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In Piwigo 14.x and its new album editor, I see an example of very blurry album thumbnail.

<img width="807" alt="Screenshot 2024-02-02 at 11 00 41" src="https://github.com/Piwigo/Piwigo/assets/9326959/58528623-c000-4477-8bf3-3f10f441877f">

After investigation, I've found that it's an upscale of the thumbnail photo size. That's because sizes S, XS and XXS are disabled on this Piwigo.
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