Marker collision fix (Fixes #2461)

components/nifbullet/bulletnifloader.cpp

@@ -274,9 +274,9 @@ void ManualBulletShapeLoader::handleNode(const Nif::Node *node, int flags,
                 // No collision. Use an internal flag setting to mark this.
                 flags |= 0x800;
             }
-            else if (sd->string == "MRK" && !mShowMarkers && raycasting)
+            else if (sd->string == "MRK" && !mShowMarkers && (raycasting || mShape->mAutogenerated))
             {
-                // Marker objects should be invisible, but still have collision.
+                // Marker objects should be invisible, but can still have collision if the model explicitely specifies it via a RootCollisionNode.
                 // Except in the editor, the marker objects are visible.
                 return;
             }