Its kind of sad how little support EU4 gets for patches these days.
I mean, look at CK3 :
-Release on 1st september
-Huge patch fixing TONS of issues was released about one month later
Meanwhile EU4's 1.30 patch/emperor DLC :
-Released in June
-Made the AI significantly worse and failed to fix many key issues that have been plauging the game, such as the AI's complete inability to play as the HRE emperor, colonial nations having broken AI, the AI spamming useless buildings, etc
-4 months later, all we have had are a few small patches and even simple fixes like Poland's elective monarchy reform have not been included yet, and it takes a modder less than 5 minutes to add the ONE line of code needed to fix it (poland keeps the reform if they get PUed, and obviously you cant be an elective monarchy as the junior partner in a union)
I get that CK3 is the new flag ship product but you would expect a major DLC to have more support than this. Its sad.