0009650: Visitors begin attacking citizens and long-term residents when a siege starts

Notes
(0034946) Huntthetroll (reporter) 2016-03-31 15:12	I've seen this bug several times, too. (Since my citizens are all armed to the teeth and reinforced by dozens of mercs, the visitors always get slaughtered.) I've observed that the infighting always begins at the moment when someone first notices one of the invaders. Could it be that the presence of an invading force somehow reminds some visitors that their civs are at war with each other?

(0035074) Knight Otu (manager) 2016-05-03 03:55	entropai posted a save at 0009659.

(0035114) JustAnotherLurker (reporter) 2016-05-10 03:52	I play with the Fortress Defense mod, as well as a few other tweaks, but I've had the same behavior across all of the dozen or so visitor races. It's worth noting that the FD mod races' entity raws are mostly based on the vanilla goblin raws though. It also triggers on detection of ambushes. I've also had a few cases of my (mostly mercenary) military units turning on each other in the course of pacifying the visitors, with some casualties, but those might just be due to missed attacks and the like, and I haven't noticed any of them turning on civilians afterwards.

(0035234) JustAnotherLurker (reporter) 2016-05-19 08:15 edited on: 2016-05-19 08:26	Update: In another fortress in 42.06, with DFHack r1 and Fortress Defense V2 R18, somewhat further tweaked, the Dwarven caravan and liaison are going hostile on detection of an ambush by Warwolves (FD race with a transformation syndrome). I have accepted long-term residents from multiple races, including quite a few mercenaries. However, I should note that my military is all training in their surface barracks 15 Z-levels above my deeply dug in depot. I have not yet received any citizenship applications, so as far as I can tell amidst the chaos of 200 dwarves hauling trade goods, none of my resident bards are nearby either. Some combat has occurred between visitors in my outdoor tavern and the first ambush squads to arrive, but the liaison and caravan arrived after the first squads were detected. I believe at least one of the liaison's bodyguards failed to make it behind my defenses in time and was caught and killed by the ambushers as well.

(0035244) nistone (reporter) 2016-05-20 06:45 edited on: 2016-05-20 06:46	I just experienced this bug. As soon as the siege started, an invading goblin fell from a tree and got hurt, then most (not all) of my human and goblin visitors started attacking my citizens and long-term residents. The human long-term residents were still on my side. The dwarf visitors and a dingo man visitor did not become hostile either. The invading goblins were still outside and on the opposite side of a river (I have a bridge that I retracted) so they were nowhere near the visitors. Edit: Version 42.06

(0035251) nistone (reporter) 2016-05-21 08:56	I have been able to easily reproduce the issue in my world. In this save, the siege is pretty much done, but there is a troll at the top of the map. If you send my archer squad ({s}quad - {b} to select it) to attack the troll across the river to the north (don't need to cross the river), the visitors will become hostile. Save file: http://dffd.bay12games.com/file.php?id=12054 [^]

(0035258) Toady One (administrator) 2016-05-21 16:48	There were lots of things going on in the nistone save -- basically, one of your residents was the grandchild of a bandit and the visitors, fighting for justice, took advantage of the siege to jump into the fight on the side of the troll. I've adjusted some numbers.

Issue History
Date Modified	Username	Field	Change
2016-03-21 19:05	forsquilis	New Issue
2016-03-31 15:12	Huntthetroll	Note Added: 0034946
2016-04-01 14:36	Huntthetroll	Issue Monitored: Huntthetroll
2016-05-03 03:55	Knight Otu	Relationship added	has duplicate 0009659
2016-05-03 03:55	Knight Otu	Issue Monitored: entropai
2016-05-03 03:55	Knight Otu	Note Added: 0035074
2016-05-03 03:55	Knight Otu	Assigned To	=> Knight Otu
2016-05-03 03:55	Knight Otu	Status	new => confirmed
2016-05-03 03:56	Knight Otu	Relationship added	has duplicate 0009720
2016-05-03 03:57	Knight Otu	Sticky Issue	No => Yes
2016-05-10 03:52	JustAnotherLurker	Note Added: 0035114
2016-05-19 08:15	JustAnotherLurker	Note Added: 0035234
2016-05-19 08:26	JustAnotherLurker	Note Edited: 0035234	View Revisions
2016-05-20 06:45	nistone	Note Added: 0035244
2016-05-20 06:46	nistone	Note Edited: 0035244	View Revisions
2016-05-21 08:56	nistone	Note Added: 0035251
2016-05-21 16:48	Toady One	Note Added: 0035258
2016-05-21 16:48	Toady One	Status	confirmed => resolved
2016-05-21 16:48	Toady One	Fixed in Version	=> Next Version
2016-05-21 16:48	Toady One	Resolution	open => fixed
2016-05-21 16:48	Toady One	Assigned To	Knight Otu => Toady One
2017-01-15 15:29	Huntthetroll	Issue End Monitor: Huntthetroll
2017-11-22 15:32	Dwarfu	Sticky Issue	Yes => No
2018-08-26 12:04	Loci	Relationship added	related to 0010870
2019-03-25 18:26	Loci	Relationship added	related to 0010721