diff --git a/src/java/com/threerings/jme/model/Model.java b/src/java/com/threerings/jme/model/Model.java
index 300bcfdb..dff8edec 100644
--- a/src/java/com/threerings/jme/model/Model.java
+++ b/src/java/com/threerings/jme/model/Model.java
@@ -843,6 +843,9 @@ public class Model extends ModelNode
         // update controllers and children with accumulated time
         _accum += time;
         if (_outside) {
+            if ((lockedMode & LOCKED_TRANSFORMS) != 0) {
+                return; // world bound will not changed
+            }
             if (!wasOutside) {
                 storeWorldBound();
             }