Europa Universalis IV

Europa Universalis IV

MEIOU and Taxes v2.60.5
Boeing 747 27 Jun, 2021 @ 2:09pm
Global development automatically changes to Zero
When i start up a new campaign, all of the provinces have their normal development (IE, a chinese province having 80 dev, etc). But, when a few years goes by, every province in the world automatically changes to 1 dev. can someone please explain?