Bounty not progressing

[radiant eagle]

I'm trying to complete the Elusive hero bounty where you gotta kill 3 demolishers with a ranged weapon and I've killed 3 of them with 3 separate ranged weapons and none of them counted, is there a specific ranged weapon i have to use? Any help on the matter would be appreciated.

[odd bane]

is it the pilgrim outpost bounty? those are VERY buggy and there is not much you can do besides restart the game and see if it works or pray for them to patch it