Faulty interaction with quest giver after raising region level

Issue: (I raised the region level. After that players that either remained in the area or logged in and had a lower level than the zone got stuck in an endless loop with quest givers. I think they were trying to get a quest their level was not eligible for.)
Crash (y/n): (n)
Platform (Windows/Mac/Linux): (Windows)
Version number: (v0.12.21)