When @replying to someone the first letter you type is always in bold.
When clicking into the text box to type whatever nonsense there is already a space. When you post the message the space is not there which is good. If you backspace once when typing the message to remove that space, upon posting the message will appear as edited instead of posted.
When quoting someone there is a blank line of text at the top of the text box.
Messages seems to appear as "edited" and "posted" randomly. Seems like it happens consistently when removing the space i described above but messages also appear as "edited" at other times without actually having been edited.