Maniphest T45850

Strange thumbnail issue after a re-upload
Closed, InvalidPublic
Actions

Assigned To

None

Authored By

	• MZMcBride
	Jan 11 2013, 3:42 AM

Tags

Referenced Files

None

Subscribers

Description

Probable thumbnail bug demonstrated on test.wikipedia.org, 2013-01-10

https://commons.wikimedia.org/wiki/File:Jacob_J._Lew_signature.png had a white background. So I edited the file and uploaded a new version with a transparent background. But now the image seems to be very wonky: https://en.wikipedia.org/wiki/User:Tim_Starling/Possible_thumbnail_bug.

At certain sizes (notably the size that was currently being used in an article, 128px), the image has a transparent background. With no size specified or with some arbitrary sizes, the image has a white background. Maybe a partial upload or something? Dunno. I'll attach a screenshot as well.

Version: wmf-deployment
Severity: normal

Attached:

test-wikipedia-thumbnail-bug-2013-01-10.png (469×882 px, 53 KB)

Details

Reference: bz43850

Event Timeline

• bzimport raised the priority of this task from to Low.Nov 22 2014, 1:35 AM

• bzimport added a project: WMF-General-or-Unknown.

• bzimport set Reference to bz43850.

• bzimport added a subscriber: Unknown Object (MLST).

• MZMcBride created this task.Jan 11 2013, 3:42 AM

Both on https://en.wikipedia.org/wiki/User:Tim_Starling/Possible_thumbnail_bug and http://test.wikipedia.org/wiki/Possible_thumbnail_bug
I always get a red background (Firefox 17.0.1, Opera 12.02, Google Chrome 23.0.1271.97, no matter if logged in or not).

Cannot reproduce I guess.

I'm seeing similar weirdness at https://it.wikipedia.org/wiki/Discussioni_file:Wiki.png.

My suspicion is that thumbnail purging is either very slow or broken.

Wikimedia now uses Thumbor as its thumbnail generator, and none of the linked thumbnails are currently broken.

Peachey88 edited projects, added MediaWiki-File-management; removed WMF-General-or-Unknown.Mar 25 2021, 11:32 AM

Restricted Application added a project: Commons. · View Herald TranscriptMar 25 2021, 11:32 AM

Peachey88 removed a project: Commons.Mar 25 2021, 11:32 AM