(Question asked for U18: The Second Dream.)
Rarely, after completing an alert, I get no end-of-mission reward (ie. credits and resource/mod/egg/blueprint). This has been happening since U16: Sanctuary, but it seems to have intensified around U17: Echoes of the Sentient.
The problem is, there doesn't seem to be a pattern for this behavior:
I thought this was an anti-idling measure: the first time this happened, several updates ago, on a Nightmare Mod alert the other player did all the work; but later it also started happening on the ones where I was visibly active (hosting Exterminate alert and killing 25% of enemies before anyone else joined in) and not happening on ones where I did almost nothing,
after a streak of 3 archwing alerts with no rewards, I thought that this was bug specific to archwing, but then I got a couple Working-as-Intended ones with a couple of no-reward ones mixed in,
there's this one answer from U9 that says you lose credit reward if you don't reach Extraction in time, but I have observed on many occasions that this was patched out - and in most alerts where I got no rewards, I did reach the extraction,
and, for the sake of completion, this occurred when I was doing these alerts for the first time - I know that you can't get a reward twice if somebody doing it for the first time taxis you to the mission.
Is there a feature that's causing this, or is this a genuine bug?