What do you mean they're not shooting? And why does my NPC pilot on his SLF die so quickly?
If you watch scouts in particular, if you move sideways at over a certain speed, thargoids just give up entirely and won't fire, even if normally they'd be able to hit you.
NPC fighters unfortunately don't orbit at sufficient velocity normally. But even there, they now survive substantially longer around interceptors than before. I was paying attention back when they first changed thargoid targeting(Back when they made them jump out if you move too far away instead of just chasing you indefinitely), and when they first started directly targeting SLFs, they would just instantly oneshot them with perfect accuracy no matter what. Nowadays, they will often miss them repeatedly, allowing them to survive substantially longer than before(instant death).
Basically, NPC SLFs have always died very rapidly to AX damage, but now, in exchange for dealing far less damage, they also take far less damage.
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Things they need to fix now:
1. AX Taipan won't fire at all.
2. Interceptors directly target SLFs(this will become a major issue if targeting problems are fixed)
3. SLFs shoot incorrectly/miss/don't fire at all(at higher ranks especially)
4. SLFs still die instantly to caustic damage.
5. SLFs will sometimes disable their weapons for no reason.
6. NPCs will sometimes run away forever until they go over 25km and blow up.
7. NPCs often ram directly into an enemy and explode.
8. Interceptors can instantly redirect their lightning attack without charging up.
9. Interceptors and Scouts stop firing entirely if you move too fast(probably the same bug as the NPC targeting bug)
That's just off the top of my head. Frankly, they're a bit of a mess right now. I'm the biggest fan of them you'll find, and even I've stopped using them for the past year, and that's saying something.