# This patch file was generated by NetBeans IDE
# Following Index: paths are relative to: /home/ondra/storage/netbeans/core-main
# This patch can be applied using context Tools: Patch action on respective folder.
# It uses platform neutral UTF-8 encoding and \n newlines.
# Above lines and this line are ignored by the patching process.
Index: openide.nodes/src/org/openide/util/actions/NodeAction.java
--- openide.nodes/src/org/openide/util/actions/NodeAction.java
+++ openide.nodes/src/org/openide/util/actions/NodeAction.java
@@ -611,9 +611,15 @@
         }
 
         public void resultChanged(LookupEvent ev) {
-            boolean old = enabled;
+            final boolean old = enabled;
             enabled = delegate.enable(nodes());
-            support.firePropertyChange(PROP_ENABLED, old, enabled);
+            Mutex.EVENT.readAccess(new Runnable() {
+
+                @Override
+                public void run () {
+                    support.firePropertyChange(PROP_ENABLED, old, enabled);
+                }
+            });
         }
 
         public JMenuItem getMenuPresenter() {