Fix collision for nodes with MRK extra data (Fixes #2415)

components/nifbullet/bulletnifloader.cpp

@@ -274,12 +274,14 @@ 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)
+            else if (sd->string == "MRK" && !mShowMarkers && raycasting)
-                // Marker objects. These are only visible in the
+            {
-                // editor.
+                // Marker objects should be invisible, but still have collision.
+                // Except in the editor, the marker objects are visible.
                 return;
             }
         }
+    }
 
     if (isCollisionNode || (mShape->mAutogenerated && !raycasting))
     {