dissapearing items and blanking signs

I just looked on the forums and there is nothing on it that says anything about this.

I have a complaint about disapearing items in chests, maybe furnaces and blanking signs. It has happened to me twice already and i lost all of my ores, pumpkins, gunpowder, bones, and arrows. This also blanks all of the signs this means the lockett signs and i think it happened to the spawn rule signs. The same thing happened to ArkAngel i've heard that the same thing happened to him too. I hope the owners find out if this is a problem with in if the mods fighting with another or if it is just a glitch either way it needs to be fixed.