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Non-free local images not being displayed in page previews despite being available
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Description

It appears that non-free images (which are stored locally) are not visible in Preview on the desktop site, if you are using Firefox 68.7 ESR on Debian 11.

See https://en.wikipedia.org/w/index.php?title=Wikipedia:Village_pump_(technical)&oldid=962113346#Firefox_can't_display_infobox_images_in_the_preview_of_pages for more information.

Reported by @Editor-1, who uses Debian 11, Firefox 68.7 ESR. The problem is reproducible in both safemode and in a private browsing window.

Replication steps

The issue being complained about is that https://en.wikipedia.org/wiki/Skatetown,_U.S.A. has a non-free image in the infobox:


If I hover over that in https://en.wikipedia.org/wiki/Patrick_Swayze#Film I see no image in the page preview:

If I go to https://en.wikipedia.org/wiki/Skatetown,_U.S.A.?action=info I see a page image:

and that image is present in https://en.wikipedia.org/api/rest_v1/page/summary/Skatetown%2C_U.S.A.
but it's not ouputted inn the page preview despite the stance in T147317:

This happens regardless of browser.

Event Timeline

Pretty sure this is not a firefox issue but specific to all images in page previews.

I can check tomorrow but am pretty sure T124225 is the reason these images are not used.

https://m.mediawiki.org/wiki/Extension:PageImages#Image_choice

I just did a quick check with Chromium 83.0.4103.61 and Firefox 77.0.1 on Ubuntu 18.04, couldn't reproduce.

The issue being complained about is that https://en.wikipedia.org/wiki/Skatetown,_U.S.A. has a non-free image in the infobox:


If I hover over that in https://en.wikipedia.org/wiki/Patrick_Swayze#Film I see no page preview.
If I go to https://en.wikipedia.org/wiki/Skatetown,_U.S.A.?action=info I see a page image:

and that image is present in https://en.wikipedia.org/api/rest_v1/page/summary/Skatetown%2C_U.S.A.
but it's not ouputted inn the page preview despite the stance in T147317:

This happens regardless of browser.

(My guess is that I suspect the issue is actually not a licensing problem but due to the size of the thumbnail since all non-free images are a poor and low resolution)

Jdlrobson renamed this task from Local images not being displayed in preview in Firefox 68 on Debian to Non-free local images not being displayed in page previews.Jun 16 2020, 3:36 PM
Jdlrobson renamed this task from Non-free local images not being displayed in page previews to Non-free local images not being displayed in page previews despite being available.
Jdlrobson updated the task description. (Show Details)
Jdlrobson updated the task description. (Show Details)
ovasileva triaged this task as Medium priority.Jul 7 2020, 3:51 PM
ovasileva moved this task from Incoming to Triaged but Future on the Readers-Web-Backlog board.