From @GavJenks on March 3, 2018 23:26
Unfortunately I can't seem to nail down exactly the pattern for when this happens in EP, but on the old PP, it used to happen reliably whenever somebody threw your pearl to release it. You would be stuck in the end, even through restarts and logins, until you did /pp locate. So that might lead to finding the problem. Or otherwise, see what code is called on /ep locate, and reconsider whether it should be called more often as well such as on login.
Copied from original issue: CivClassic#34