So, the change to accuracy seems to have introduced the possibility of dodging beneficial buffs from people of your own level. I was "able" to dodge a Bard's song earlier on MNK and looking around on the web I saw that some Summoners are reporting that they were able to dodge their own Dreadwyrm Trance.
The latter sounds like a bug because it messes up your rotation entirely, but if the former is a feature I really don't like it. Beneficial buffs from party members shouldn't depend on RNG to benefit from.