Chat doesn't work

Sometimes (I don't know why), in the Windows 10 Edition, the chat doesn't work, when I type in something, it just displays nothing. You can only write if you press ESC, then type in something, but then the Enter key doesn't work, so you must click on the symbol at the right and then on the Enter Symbol, but that way is very complicated, so please fix that!

PS: I found out that this also affects typing in the world name.