diff --git a/packages/node_modules/@node-red/editor-client/src/js/events.js b/packages/node_modules/@node-red/editor-client/src/js/events.js
index bd2abd8d0..943854393 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/events.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/events.js
@@ -39,15 +39,16 @@
              console.warn(evt,args);
          }
          if (handlers[evt]) {
-             for (var i=0;i<handlers[evt].length;i++) {
+             let cpyHandlers = [...handlers[evt]];
+          
+             for (var i=0;i<cpyHandlers.length;i++) {
                  try {
-                     handlers[evt][i].apply(null, args);
+                     cpyHandlers[i].apply(null, args);
                  } catch(err) {
                      console.warn("RED.events.emit error: ["+evt+"] "+(err.toString()));
                      console.warn(err);
                  }
              }
-
          }
      }
      return {