I made a post to [email protected], then in another tab I subscribed to [email protected]. Back in the tab I made the post in, the page updated itself to look like I made the post in [email protected] instead. I didn't refresh the page or do anything else... It just changed by itself.
This is likely a websocket issue, in which case, it will be fixed by the release of Lemmy 0.18 (which should be happening in the coming days)