Text on sign is still disappearing.

I play on a realm with my buddies, and randomly the text on signs keep disappearing. With using colored text and without. I have tried searching this issue, it says resolved but I am still having problems. For example; I am trying to type "IGGY'S END TRIP CHEST" but as soon as it gets to the C and P the whole text disappears. It is so frustrating. PLEASE ASSIGN SOMEONE TO FIX THIS!!