[1.0.0] Scenario desync, no mods (not happening before 1.0.0)

[Oarc]

I'm not sure what changed. I haven't made any significant changes to my scenario code since 1.0.0 was released.
However, I'm seeing a huge number of desyncs now for players joining my server.

Here are some reports uploaded by another player: https://www.dropbox.com/sh/za0h0osa019h ... 9byba?dl=0

I don't really know what player action or sequence of events might trigger this.

All I could figure out from the looking at 2 of the desync reports is that the first diff seems to be related to a <random-generator> and a lot of subsequent diffs are related to biter positions being very slightly different.

Any help would be much appreciated. I have a hard time figuring out what causes desyncs like this, especially when I haven't made any major changes recently, only the update to 1.0.0 seems to have been the major change.
I can't roll back and test easily cause it's hard to get a player base to help me do that.

Thanks!

[boskid]

Files appear to be removed from dropbox.