Tier 1 Thicket Map bonus objective bug

Could not complete the bonus objective of the Tier 1 Thicket Map bonus objective with the stated requirements. I had to throw the kitchen sink at it to get the reward.

My learning from this: If your atlas objective is bugged and the stated requirements don't yield the reward... obtain another of the same map and just regal for rare and vaal for corruption on the map for your second attempt