Index: oak-core/src/main/java/org/apache/jackrabbit/oak/security/authorization/permission/PermissionStoreImpl.java
===================================================================
--- oak-core/src/main/java/org/apache/jackrabbit/oak/security/authorization/permission/PermissionStoreImpl.java	(revision 1636701)
+++ oak-core/src/main/java/org/apache/jackrabbit/oak/security/authorization/permission/PermissionStoreImpl.java	(working copy)
@@ -54,7 +54,7 @@
 
     private final RestrictionProvider restrictionProvider;
 
-    private final PrivilegeBitsProvider privilegeBitsProvider;
+    private PrivilegeBitsProvider privilegeBitsProvider;
 
     private PrivilegeBits allBits;
 
@@ -65,7 +65,6 @@
         this.workspaceName = workspaceName;
         this.restrictionProvider = restrictionProvider;
         this.privilegeBitsProvider = new PrivilegeBitsProvider(root);
-
         allBits = privilegeBitsProvider.getBits(PrivilegeConstants.JCR_ALL);
     }
 
@@ -72,6 +71,7 @@
     protected void flush(Root root) {
         this.permissionsTree = PermissionUtil.getPermissionsRoot(root, workspaceName);
         this.principalTreeMap.clear();
+        this.privilegeBitsProvider = new PrivilegeBitsProvider(root);
         allBits = privilegeBitsProvider.getBits(PrivilegeConstants.JCR_ALL);
     }