I just found a video of a leaked conversation between the developers that explains what happened yesterday night. It might shed some light on this issue (or not).
https://www.youtube.com/watch?v=JTRAagg02s8
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Edit: Moved from this thread, as I feel bad for derailing the discussion. On a more serious note, it's a video thread and to be d'accord with the rules here a short summary:
This is a satiric video in which, inspired by the recent popularity of a new meme, I try to bring a smile on some people's face that seemed a bit too much worried about barbarians being nerfed by the removal of the bracers just a day before the patch hit. The bracers had to be removed though as they were too strong and barbarians should be in a good spot anyways; if not, Blizzard will address this (see John Yang's tweet). What was really very unfortunate was the timing of the removal; many people don't follow Blizzard news that closely but have heard about the bracers and might keep gambling for them.
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He only mentioned the first attack to show you that even the first gets multiplied, just that. All attacks get the bonus.
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