@Ji Fu (Domestic Terrorist) if your seeing it when posting to a group, that most likely means their server is underload and delaying processing messages, and unfortunately even if it finally is processed and post to that group friendica does not always clear that stuck task on the backend, if it starts happening a lot reach out to the admin of the group your trying to connect with, they may not be aware their instance is under load and sticking, and you could also check with your admin on the instance your on to make sure they dont have an issue without going posts, its harmless bug more than an issue most likely though,