All damage modifiers inside skill trees are multiplicative now. That way players no longer need to know the old hidden mechanic of skill trees modifiers being multiplicative with modifiers from outside tress. Now it literally says it on each of those nodes. If a node doesn’t say (multiplicative with other modifiers) in the description, that’s a bug. But they are multiplicative in the background now, always, even with other damage modifiers on the tree (which wasn’t the case before).