Released 5.6.4h
I was wondering why I haven’t seen acid rain in a long time and sure enough, turns out regional overlays don’t copy weather settings. Seems every compatibility function in the game is broke in one way or another.
Reverted back to regional override and made a compatibility override in the optional folder for worlds already loading more buildings before PK. Alternatively you can edit your mod load order in mods.json in your save folder.
When creating a new world you want to load more buildings after PK.