Fortuna - Scorched Earth - Seek and Destroy Corpus Moa's 2x bugs

[-Guardian_Angel-]

We already did 3 runs in row now.
The first run, nothing happened, so we extracted to start the bounty again.

The second run, we had the Search & Destroy Corpus Moa's again (just like the first run).
However during this round, the Moa's didn't spawn at all. 0 spawn.
So we had to extract, failed the bounty and we restarted.

Run number 3, it started well, nothing wrong.
We had 3 excavators, they all finished, we got our reward.
But then Search & Destroy Corpus Moa's came up again. 
While on our way to the Corpus Moa's, the bounty suddenly failed. I already had 2 kills.
But the timer kept on going, the bounty stopped, the moa's didn't count anymore if they were killed.
[screenshot; in the moa zone, 2 kills, timer went down, but nothing counted]

 

Edit: We also noticed that multiple times, during both the Seek and Destroy Corpus Drones AND Seek and Destroy Corpus Moa's, that they simply don't spawn enough or fast enough to be able to get the bonus within the time limit.