The site still keeps thinking I'm a bot. It's fucking annoying.
On further experimentation, is this related to how old the tabs are? My habits of hoarding tabs and keeping the PC on means I can end up with tabs that have been opened days ago, ctrl+F5'ing the offending page seems to remove the bot whine.
Sorry for the super late reply. I believe there is a time-based anti-spam mechanism, so refreshing the tabs should fix the issue. I'm not sure what the rationale behind that is, only STI would know.