If the mods password is set. Editing place holder text in any rooms will results in that particular room cannot scroll back to previous history. That button will disappear. It might be resolved spontaneously by time, or changing the mods password, or reverse the placeholder text.
Someone told me it's net downvote counts? However in some case it took many downvotes to take down a score of -1.5 or -2.0. is it because of delay?