Thumbnail creation removing other original attachment files

[remimodulo]

How to reproduce bug :

• Get any thumbnail size from your WordPress. For exemple : "150x150".
• Upload a file with this size written in the file name : "test-150x150.png".
• Upload an other file with the same name without the size : "test.png" (large enough that WordPress will try to create a thumbnail with the size you got early).

Result : the original file of the first media uploaded will be replaced by the thumbnail of the second (you might have to reload the page to see it in the media list).

First file to upload (wp-media-bug-150x150.png) :

Second file to upload (wp-media-bug.png) :

What it does... :

[remimodulo]

First file to upload

[remimodulo]

Second file to upload

[remimodulo]

What it does...

[remimodulo]

The second file to upload (edit)

[desrosj]

Duplicate of #42437.

Hi @remimodulo! Thanks for the detailed ticket, and welcome to trac!

There is a ticket for this problem already. Since there has been some conversation over there, going to close this out as a duplicate.