What kind of enemy are you fighting against? I tried against rebel ai (Quasar-Fires, specifically) in skirmish and this is not actually happening, perhaps it's some error happening only in certain kinds of fighters?

its probably your fighters that die and that cost you money

I'm playing as rebels on galactic conquest. In one instance I attacked the system of Jabiim held by the Separatist holdouts which had a bunch of vulture droids and such. Their forces were mostly said fighters, gunships, and an anti-fighter frigate. So, I brought in a bunch of Nebulon-B's and CR-90's and specifically sent all my fighters to the corner of the map. That fight cost me no less than 10,000 credits for the privilege of blowing up a bunch of separatist droids.

I'll add that I didn't notice losing credits when fighting the Empire controlled systems, but I definitely noticed it when fighting the independent "pirate" systems as well.

Encountered it again, but against the Imperial Defectors faction in a battle over Dorin. The destruction of each TIE Fighter, TIE Bomber, and Imperial Shuttles Squadron that were garrisoned with the station quickly drained my bank account. They had no other units present, just those that spawned from the station. It was a level 1 Independent Forces Station. They also had a shipyard, though that didn't contribute any garrisoned units. I went from 9000 credits to 0 over the course of the fight. I did lose one CR-90 to the bombers, but no other vessels or fighters as all of my own fighters were sent far away from the fleet and the station several minutes before contact with any enemy forces.

The common behavior fighting both the Imperial Defectors and Separatist Holdouts is that it was the garrisoned fighters and gunships from the station that drain the bank account.

Yah I can second this, this happens consistently when fighting certain secondary factions like the imperial defectors and Separatist holdouts. I was the Rebellion.

I guess you just spend all your money before killing them lol.

I'm this close to dropping this fkign mod and moving to Thrawn's Revenge, I was playing the mods in order, Fall of the Republic, this one and then plan to do Thrawn, you know playing the mods in order of the canon(The real canon not the disney bs). But screw this.