I went into orb vallis to perform 6 perfect captures. I finished 5 consecutive ones in the same run and then onto the 6th
Then I interacted with the 6th trail point and followed the trail which led me into the entrance of the Exploiter Orb cave.
Then there was loading icon on the screen (as if to initiate the Exploiter Orb fight) and I reached the calling point.
Unfortunately, the calling point was non-responsive (as if there was a bug) so I eventually aborted the mission.
I then re-entered Orb Vallis, performed another perfect capture (in fact quite a few) and the completion of the 6/6 perfect captures refuses to show.
Please disregard. It is not a bug.
The task needs you to capture different animals. Same animals of a different rarity also count towards completion.