1. the chat boxes should allow text formatting such as creating a new line, making bold, italics etc. , emojis, adding files, etc
By default, the enter button sends a messagee. in that case, shift + enter should create a new line.
In some places like this issue report, shift+enter works but doesn't work in normal chat and i've not seen how it works in projects.

2. Users should be able to edit and delete chat.

3. The time at which messages are sent and received, the seconds in it can be removed as i dont think it is common, i don't think it is best practice even though it doesn't hurt, and it just appears out of the norm.????