Load the lowest faction reaction for every faction

CHANGELOG.md

@@ -69,6 +69,7 @@
     Bug #7459: Icons get stacked on the cursor when picking up multiple items simultaneously
     Bug #7472: Crash when enchanting last projectiles
     Bug #7505: Distant terrain does not support sample size greater than cell size
+    Bug #7553: Faction reaction loading is incorrect
     Feature #3537: Shader-based water ripples
     Feature #5492: Let rain and snow collide with statics
     Feature #6447: Add LOD support to Object Paging

components/esm3/loadfact.cpp

@@ -57,7 +57,12 @@ namespace ESM
                     ESM::RefId faction = esm.getRefId();
                     int reaction;
                     esm.getHNT(reaction, "INTV");
-                    mReactions[faction] = reaction;
+                    // Prefer the lowest reaction in case a faction is listed multiple times
+                    auto it = mReactions.find(faction);
+                    if (it == mReactions.end())
+                        mReactions.emplace(faction, reaction);
+                    else if (it->second > reaction)
+                        it->second = reaction;
                     break;
                 }
                 case SREC_DELE: