The bugged core trigger
I did some testing on the core trigger recently. It appears that it DOES work, but that it is reversed!
the trigger core = { province = x data = -1 } is true if province x is NOT a core province. By using NOT = {} I have had this trigger fire correctly for core provinces.

I did some testing on the core trigger recently. It appears that it DOES work, but that it is reversed!
the trigger core = { province = x data = -1 } is true if province x is NOT a core province. By using NOT = {} I have had this trigger fire correctly for core provinces.