Don't block hits when in hand-to-hand combat (shield not visible)

apps/openmw/mwmechanics/combat.cpp

@@ -73,9 +73,16 @@ namespace MWMechanics
             return false;
 
         MWMechanics::CreatureStats& blockerStats = blocker.getClass().getCreatureStats(blocker);
+
+        // Don't block when in spellcasting state (shield is equipped, but not visible)
         if (blockerStats.getDrawState() == DrawState_Spell)
             return false;
 
+        // Don't block when in hand-to-hand combat (shield is equipped, but not visible)
+        if (blockerStats.getDrawState() == DrawState_Weapon &&
+                inv.getSlot(MWWorld::InventoryStore::Slot_CarriedRight) == inv.end())
+            return false;
+
         MWMechanics::CreatureStats& attackerStats = attacker.getClass().getCreatureStats(attacker);
 
         float blockTerm = blocker.getClass().getSkill(blocker, ESM::Skill::Block) + 0.2 * blockerStats.getAttribute(ESM::Attribute::Agility).getModified()