When you first send off a private message to a user, the message is duplicated in the messages UI, making it appear to have been sent twice. After a refresh, the copy goes away. Reproduced in both staging and production environments.

None.
Does this happen when sending to a new user?
@TheHollidayInn That's when I'd noticed it--pull up profile of somebody you haven't messaged before, click message button, write up message, send.
maybe I could check this one out?
@legitmaxwu Sure, thank you! :)
Actually this has been fixed in https://github.com/HabitRPG/habitica/pull/10428 that will be merged soon
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Actually this has been fixed in https://github.com/HabitRPG/habitica/pull/10428 that will be merged soon