This did not resolve my issue unfortunately.
Interestingly enough, I can put anything in the title for my +10 Rookery, but can’t list at all if I change the dungeon/key, Disabling all addons did not change this either.
It’s been a while since I’ve even ran my own key, probably at least a week, so not sure when this started happening.
Edit:
So I found the issue – it seems this lil guy is hidden in the title area.
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A left square bracket on the line above a space, which is odd, because you can’t actually create a new line in a title, but makes it so you can’t see it either until you CTRL+A. Once the new line is removed you should be able to list without any issues.