wiki thumbnail problem

Lord Bowser

Super High School Level Bowser
Core 'Shroom Staff
Poll Committee
so for some reason it seems like File:Pine T. Jr..PNG is having trouble rendering as a thumbnail at certain sizes. this can be seen on my sandbox (User:Lord Bowser/sandbox), where i tried to thumbnail it at multiple different sizes.

could someone explain why this is happening, and how to fix it? i'll need it as soon as possible for a shroom section. my initial thought was that the double period in the image name was the culprit, but i don't want to move it without knowing for sure if that's it.
 

Hobbes

Star Spirit
Core 'Shroom Staff
Poll Committee
Retired Wiki Staff
Yes, it's the period. I have moved the file and will replace the link on the article.
 
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