These gloves require 5 heroic strikes. I was working towards it and was at 3/5 completed when the next heroic strike I was put in was Tree of Probabilities. The strike was already half over so I spawned at the checkpoint in Atlas Grove after the sparrow section. The rest of that strike went quickly but when I checked progress the gloves were reset to 0/5. I have tried doing 5 more strikes since then and they are still at 0/5. I have tried logging out and back in, waiting a day and many other things but no matter what I do I do not get any progress. I kind of figured the gloves would be a slam dunk to finish but I think I've encountered a bug related to being put in a strike that is already partially completed? Yes I have checked twenty times over that I am in fact queueing for heroic strikes.