Merge pull request #4968 from Citadel-Station-13/upstream-merge-34667

[MIRROR] Fixes slimes not attacking anybody

code/modules/mob/living/simple_animal/slime/life.dm

@@ -9,8 +9,6 @@
 
 /mob/living/simple_animal/slime/Life()
 	set invisibility = 0
-	set background = BACKGROUND_ENABLED
-
 	if (notransform)
 		return
 	if(..())
@@ -341,6 +339,8 @@
 
 					var/ally = FALSE
 					for(var/F in faction)
+						if(F == "neutral") //slimes are neutral so other mobs not target them, but they can target neutral mobs
+							continue
 						if(F in L.faction)
 							ally = TRUE
 							break