A druid that is wild shaped reverts "when" they drop to 0 hit points. Does that mean other effects that occur when a creature drops to 0 hit points also occur (though possibly in any order of the druid's choice)? Specifically, if the druid were concentrating on a spell, would dropping to 0 hp - even momentarily - suffice to cause the druid to lose concentration by being incapacitated?
I can't figure out what RAW or RAI is on this one - does anybody have any pointers (e.g. a rule or rule interaction I missed, or some sage advice)?