I just tried renaming one and it updated immediately. Can you try a hard refresh (ctrl + f5) or clear your cache and see if that works?

Might have been a hiccup. Try again :o

Do you have any custom CSS or add-ons on your browser that might prevent it from working? And have you tried a different browser?

And we have found out the problem xD Unsorted cannot be changed!

No worries :) glad it was that (well not glad but glad it was figured out) Locking as this is not a bug.