Firstly, THANK YOU for the recent focus on adding in some of the game mechanics as part of the build. I've really appreciated things like Elven Accuracy and Pack Tactics being included without the need for an extension. I value the effort the development team is spending on these things and it makes the game experience better for me and my players.

Now, on the issue of pack tactics. I am seeing an issue where it's triggering when the NPC ally granting the advantage has been put down and has the dying condition. As written (and common sense) if the "pack" has been dispatched the advantage should not trigger.

Pack Tactics
You have advantage on an attack roll against a creature if at least one of your allies is within 5 feet of the creature and the ally isn’t incapacitated.