Ok, I tested it in current v4.1.85.5707. Now it's broken in totally different way. Hunter's Mark bonus is added to both normal attack and Colossus Slayer extra damage. Also when you critically hit, the damage is doubled for both normal attack and colossus slayer, which is good. But Hunter's Mark in not doubled. Every dice shoud be doubled when you critically hit.

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EDIT: In fact, due to the two bugs, the resulting damage is actually good, haha. 1d6 and another 1d6 for Hunters Mark is same as doubled 2d6 Hunter Mark damage. But you get 1d6+1d6 Hunter Mark damage even when you dont crit.

2nd EDIT: And I have a theory why Colossus Slayer works on full HP enemies. It's again due to the Colossus Slayer damage is done in separate instance. The first normal attack reduce HP and then Colossus Slayer is checked. If you did at least 1 damage by normal attack then Colossus Slayer is triggered and added.

Last edited by Zahur; 02/11/20 06:25 PM.