Infraction: 6. Do not post unless you have something new and worthwhile to say.
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Unless you're on Blizzard's development team this is just guessing, and not helpful.
They're probably debating it back and forth. Some want it, some don't want it, so they'll leave it around for a while till they've gathered enough data to truly decide.
It's because we don't know if it's a bug that Death Strike heals even if it doesn't land or not. Blizzard has been awfully silent about the whole thing so for now I am going to assume it is a bug.