Friends are unable to read my messages even though I can see them in the chat of my own realm. And when I write something on signs the text disappears when I press "Done". We have tested whether or not this is only for realms by going on public servers, and it only happens on realms. They also can't see the messages when I do /w

What I expected to happen was...:
My messages should show up for my friends, and the text on my signs should not disappear once I press "Done".

What actually happened was...

All of the text on my sign instantly disappears once I press "done", and my friends are unable to read my messages on realms even though I can clearly see that they were sent.

Steps to Reproduce:
1. Write on a sign, press done, (text disappears).
2. Log on the next day and try typing on a sign again and typing in chat, (both features don't work). 
3.