diff --git a/src/core/logging.js b/src/core/logging.js
index bb890c776..feed94eb4 100644
--- a/src/core/logging.js
+++ b/src/core/logging.js
@@ -75,6 +75,9 @@ function emit( type, data ) {
 
 	callbacks = listeners[ type ];
 	if ( callbacks ) {
+
+		// Ensure a consistent event run
+		callbacks = callbacks.slice();
 		for ( i = 0; i < callbacks.length; i++ ) {
 			callbacks[ i ]( data );
 		}