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.
@perchance Is this how I tag the dev?
Mention the server like this: @perchance @lemmy.world (remove the spaces in-between so it would be an actual ping).