>The issues with Campaign AI are unfortunately complex to resolve. We haven't been able to deliver an immediate fix as we needed to conduct some very thorough investigations into the root causes, but we are working as quickly as the complexity allows. We’ll go into that complexity below for those who want the detail, but if you’re just looking for the headline: we’re on it.

>Hotfix 6.3.2 aims to address the recent problem that we’ve seen where factions aren’t recruiting units into their Armies, and the idle behavior that’s stemmed from that. This issue with recruitment has been a highly visible problem since the release of Update 6.3, but this issue wasn’t caused by 6.3 itself. We’ve discovered that this issue has been present in the game prior to this update and affects factions where the AI is tasked with managing Unit Caps. We have found that the AI was building lists of units to recruit without taking caps into consideration, resulting in recruitment failing to occur and stalling the AI decision making process.

They're making a hotfix but still don't even know what the problem is