You're right - and the whole thing gets screwed. As the cat's already out of the bag, here's what I found.
Our faction (A) has expanded into a small system - just one outpost with a tiny population - and I've been systematically working the missions and occasionally trying negative trading. Factions D and E were in an uninteresting conflict until today's tick. Last night I did one long-range delivery mission for our faction that paid rather well. When I returned I brought back a load of Biowaste and sold it to the system and station owners (Faction C) in batches of 10t then left it to stew.
This is the results comparing yesterday with today:
| 09/03 | 10/03 |
Faction A | 31.6 | 40.8 |
Faction B | 9.4 | 11.5 |
Faction C | 24.0 | 5.2 |
Faction D | 17.5 | 21.3 |
Faction E | 17.5 | 21.3 |
This must be an unintended consequence as a drop by any faction of 18.8 should surely have been capped. Fairly sure I'm the only active visitor.