Index: src/main/java/org/apache/jackrabbit/oak/spi/commit/ValidatingHook.java
===================================================================
--- src/main/java/org/apache/jackrabbit/oak/spi/commit/ValidatingHook.java	(revision 1414718)
+++ src/main/java/org/apache/jackrabbit/oak/spi/commit/ValidatingHook.java	(working copy)
@@ -23,6 +23,7 @@
 import org.apache.jackrabbit.oak.api.PropertyState;
 import org.apache.jackrabbit.oak.spi.state.NodeState;
 import org.apache.jackrabbit.oak.spi.state.NodeStateDiff;
+import org.apache.jackrabbit.oak.spi.state.NodeStateUtils;
 
 import static org.apache.jackrabbit.oak.plugins.memory.MemoryNodeState.EMPTY_NODE;
 
@@ -165,6 +166,9 @@
         @Override
         public void childNodeChanged(
                 String name, NodeState before, NodeState after) {
+            if (NodeStateUtils.isHidden(name)) {
+                return;
+            }
             if (exception == null) {
                 try {
                     Validator v =