I play on controller and both my finisher and uncharged melee are both R3. Most of the time if i try to perform a finisher while on warlock, it just does my uncharged melee. I don't have this issue on hunter or titan. Setting my finisher to a different button fixes the issue.
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well i solved the problem. My finisher is now up on d-pad and my up dpad emote bind is now a hold instead of a press