Can confirm as of 06/13/2021 @ 11:05AM that this is an ongoing issue and has been reported for the past several months.
Challenge of the Shattered daily Petra bounty is not completing upon talking to Toland within the Ascendant Challenge.
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"Challenge: The Shattered" did not complete for me in Agonarch Abyss (Bay of Drowned Wishes) and it was the speaking Toland not the light-your-way Toland.