Possible Bug with Collections?

I've always had a collection of favourites, yet suddenly overnight, it's disappeared.
Now, this is not to be confused with favourites, but a collection.

I have ZERO idea how this could have happened, so I'm coming here.

Edit: Just searched for the collection by the URL, and it comes up, so it's luckily not deleted, but it's not showing as a collection on the collection page itself.

Should be fixed now! Thanks all for posting about this problem.

Just wanted to comment and confirm that it has been fixed for me. I noticed it wasn't fixed about an hour ago, but it's fixed for me now.

Confirmed, it's fixed!
Thank you very much, Jacob, for addressing it so quickly.