I've just experienced double posting on one of my own posts, and then spotted @Gubbi mentioning it in another thread. I've taken a look at the server to try and find out why, with no firm conclusions. Despite that, I've upped the number of possible in-flight requests the server can handle just in case it's that, and increased the number of spare worker threads that can accept requests, that sit there idle, just in case it was a responsiveness problem where new workers weren't spinning up fast enough.
So if you spot double post behaviour, let me know here so I can take another look.
So if you spot double post behaviour, let me know here so I can take another look.