Spam filter is causing problems.
The new-ish spam filter is causing problems like flagging posts with code in it as spam if over some length. Also if you happen to be creating a topic and it thinks its spam a topic will still be created even when the creation window is still open. The topics created can't be visited and trying to do so results in a "405 Gateway Time Out."
If the code is to big put it on git and add a link