More information: After restoring my hyper stats and link skills to my character, I became aware I am short 30% boss damage on both Alpha and Beta characters. I've asked other players and have deduced it's a Zero-specific class problem; other Zeros have lost exactly 30% boss as well. I can provide further evidence once the servers are online again to compare current and past boss% damages.
Cannot reproduce this bug since this occurred after the patch to .178