In today's Earth/Nature/Nature war I saw some disturbing changes for worse in ai behaviour. Earth attacks were directed at Earth monsters, while Nature attacks were directed at Nature monsters. In all of the cases I saw this there were still 3 targets (Earth/Nature/Nature) standing.
To give only 2 examples:
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The enemy Laomu does 'noxious hit' (nature damage) and targets Yilitre instead of Atum.
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The enemy Atum gets his special (earth damage) and targets Goran instead Yilitre or Alces' Pet.