Enemies on vehicles can see you while you're invisible

[Lord_Scrubling]

Whenever you play an invisibility frame like ash, dargyns will attack and shoot you directly despite being cloaked and invisible for them

Same for the rampart/ballista things you can find in grineer tilesets whenever a grineer mounts them, they just shoot at you and completely ignore your invisibility

[Hobie-wan]

Obviously they're equipped with the same sensors as the Parvos Granum propaganda drones in Corpus ships that see you when the regular enemies don't.