Just making this a formal bug report. Original thread here: https://forum.sector3studios.com/index.php?threads/shanghai-circuit-ai-bug.4720/ Video of the problem in post #1 of that thread. The same behaviour has been reported at Chang and Suzuka. Could be more...
Aware of this, latest code changes changed the AI behaviour a bit in tight hairpins. Will have to check all hairpins and fix.