Probably related to the Superheat event. The phoenix needs it to spawn and in the old weather blueprint I had it toggled to always active, but without the negative overheating it normally causes. Must have forgotten to do that on the new version which would only activate it during a heatwave. Can get that fixed up :)

Yep, that was it. Adjusted those settings to the way they were previously and should be a lot easier to find after the next update is released :)

Phoenix still not spawning for me, dino tracker finds them only underground.