When you send a message with a line break, it will not register and change it completely to “<br>”
It does happen 100% of the time unless the message was moderated or the message is started with a line break
to reproduce to the issue, type a letter and press shift and enter at the same time and then another letter
For Example: 
Turns to 
More Examples: 
My platform is PC, it happened at any point in the site where you can access the chat.
