- Fixed issue where Brandenburg could form a Personal Union with a ghost Ansbach.
- Subjects can no longer abdicate and disinherit their overlord's rulers and heirs.
- Re-added code to define_heir effect since it broke certain events.
- Fixed rebels changing own capital when breaking another nation (with weird side effects).
- Fixed cultures getting set to have wrong indices when there is more than one culture database file.
- Aggressive Expansion changes from 1.18 reverted.
- Institutions fix for effects in spawn event.
- Fixed bug that overextended countries released vassals like crazy
- Distance between border fails should now be fixed automatically within at most a year.
- Fix for: Forming a new nation with a custom nation removes cores