Sign Typos

I started typing on a sign in my realm using the § symbol to type out a colored sign with the bold font and pressed enter/return to skip to the next line since I was putting two words. After exiting the sign my color and font didn’t save as well as skipping to the next line. The same thing happens with name tags when I try to color them and put a bold font on it only sometimes the name I put on the name tag also doesn’t save and I see a bunch of *’s in place of the amount of characters I’ve put in. I’ve attached an example below for the signs.