I noticed that when I was tagging some of my images, I had accidentally included this,
in some of my uploads as tags. Now, I have noticed it before and removed it but it eluded me at least five times. Whenever I try to remove it from the edit image tab, nothing happens. It's as if the change never occurred. Removing the other tags from the images weren't affected by it.
It actually split into two separate tags: Here's the first half of it and here's the second half.
Could this be checked on? I'll make sure I'm more observant when making/checking my tags.