Tumblr links not working?

Greetings!
Today I have discovered that there's a problem with uploading via Tumblr links - both direct links to illustrations, and links to posts, *and* permalinks. The error code I got with the first two was:

Upload failed: Failed to replace upload_media_assets because one or more of the new records could not be saved..

While the permalink got me:

Upload failed: File is not an image or video.

I have a few theories why it may be:
1. Nowadays, Tumblr sometimes converts .png to .pnj, and .gif to .gifv - reflected in the file's URL.
2. When viewing a file through a direct link, like this one (Tumblr post link here), only a blue background is shown if not logged in - the file only appears properly when logged into Tumblr, for some reason. It may be a copyright protection, like on Pixiv, maybe?
3. The permalinks are more of a redirect to a Tumblr post.

I think tumblr might have accidentally broken their own website. For this post for example if I click the image it redirects me to a blue screen, even as logged in. I guess we'll have to wait a few days and see if it changes.

It's definitely something recent because it broke some of my bots too and they were working fine until yesterday.

The official Tumblr blog functioning as the site's changelog ain't listing anything yet, regarding that. If the problem persists, I guess I'll just file a support request or something. Good/Bad to see that others have the same problem.

Yep, those posts work again now. Called it.