[Leon]

I can imagine this to happen in rare occasions with split paths. On how I understand how it decides to which FATE it goes is simply 'distance'.
When the bot decides to take a path (because this FATE is closer) the path somehow on the way becomes longer and it switches to another one.

The only workaround I can imagine is to Blacklist one of the FATEs he wants to run to, so it doesn't get stuck the next time when it needs to decide which to take.
When you see this happen the next time, take a screenshot of which FATEs are up (with exact names) and what is your excact position, maybe we can reproduce and fix it somehow.