Chat messages replaces by "#" symbols from Xbox One

A strange chat issue has been hitting my friends and I. When I connect to a Realm from My Xbox One, chat seems to work as normal for one or two messages, after that all my chat messages are reported to be converted to '######'.

examples attached.

Steps to Replicate:;

• Connect two users to a Minecraft Realm, one on Xbox One, one on Windows 10
• Have the Xbox user send chat messages using the standard controller
• --> eventually they will be communicated only as "#"

Expected:

• Chat to be communicated as expected.