Plugin seemed to make text on newly created signs disappear, after disabling all plugins one by one I found this plugin to be the offender. This is likely because it hasn't been updated in ages. I do not recommend using this plugin and instead recommend "AntiPopup"

Works Great, thanks for this plugin! The person below clearly did not understand that you have added an option to block some words/curses.

Name: NoCensorship

> Censors a few words automatically.

Excuse me. What the frick?