Simply put... Signs are completely broken when certain words are entered into signs. My realm has a message board in which we post things were building and doing for eachother to know. I planned to build a shop in front of my base. Now, my username is "TheGamerShy" and everyone refers to me as "Shy". I had entered this exact phrase into the sign. "Shop planned in front of Shy's base". My friend had watched me inputting the text, and once I had typed "Shy", the sign bugged out and read "#### planned in front of Shy's base" and the text went off the sides of the sign, ignoring any line breaks entirely. It appears to only occur on realms, and I'm unsure if any other words are affected, may require some extensive testing.. but either way, it's extremely annoying.

It also doesn't matter what I enter, the moment "Shy" is input, the first word becomes censored with #'s, and the text glitches off the sign...

If you plan to test if this works  I'd recommend inputting what I first did, "Shop planned in front of Shy's base" to see if it occurs. It might work the first time, but if you break and replace the sign, odds are it'll bug out like it did for me.