Event problems
These event problems were first reported here. The change log for the first 4.0 opt-in reported they were fixed. When I got the first opt-in I checked all the events, and they were fixed. I did not check the later versions of the opt-in nor did I check the release version to see if they remained fixed.
In June, admiralWillyWilber mentioned on Discord that one didn't work right. I checked the 4.01 release and verified three have problems. I also realized that I was wrong about one of the problems.
Here are the details:
All three of these are in StartingEventDefs.xml in the base game.
These two need the change mentioned in the first link in this post.
<InternalName> is PrecursorArtifactEvent; <Type> is Merciless
<InternalName> is FamineEventNew; <Type> is Merciless
This next one is the one I was wrong about. It contains the bad code to change the population of the planet, but I learned while checking the text for details that only a ship is granted. There is not supposed to be any change to population. The section about population should be deleted.
Namely this:
<Trigger>
<OnEvent>OnEventChoice</OnEvent>
<Target>
<TargetType>Planet</TargetType>
</Target>
<Lifetime>Target</Lifetime>
<Modifier>
<EffectType>Population</EffectType>
<Target>
<TargetType>Colony</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>1</Value>
</Modifier>
</Trigger>
AI Movement Bug
This is the same behavior I previously reported here. It happened again in the last version of the 4.01 opt-in, so I saved the game there. It still occurs in the 4.01 release version when I load the save. A zip file containing the save, a screenshot showing where the problem is in the galaxy, a video showing it occurring and a text file giving full details is available here.