diff --git a/guacamole/src/main/webapp/app/clipboard/directives/guacClipboard.js b/guacamole/src/main/webapp/app/clipboard/directives/guacClipboard.js
index 3a44d382f..b4099b3b7 100644
--- a/guacamole/src/main/webapp/app/clipboard/directives/guacClipboard.js
+++ b/guacamole/src/main/webapp/app/clipboard/directives/guacClipboard.js
@@ -288,9 +288,9 @@ angular.module('clipboard').directive('guacClipboard', ['$injector',
         };
 
         // Attempt to read the clipboard if it may have changed
-        $window.addEventListener('copy',  checkClipboard, true);
-        $window.addEventListener('cut',   checkClipboard, true);
-        $window.addEventListener('focus', checkClipboard, true);
+        $window.addEventListener('copy',  checkClipboard);
+        $window.addEventListener('cut',   checkClipboard);
+        $window.addEventListener('focus', checkClipboard);
 
         // Clean up on destruction
         $scope.$on('$destroy', function destroyClipboard() {
diff --git a/guacamole/src/main/webapp/app/clipboard/services/clipboardService.js b/guacamole/src/main/webapp/app/clipboard/services/clipboardService.js
index 0dc2b7aa3..d15781672 100644
--- a/guacamole/src/main/webapp/app/clipboard/services/clipboardService.js
+++ b/guacamole/src/main/webapp/app/clipboard/services/clipboardService.js
@@ -54,6 +54,22 @@ angular.module('clipboard').factory('clipboardService', ['$injector',
     // Add clipboard target to DOM
     document.body.appendChild(clipboardContent);
 
+    /**
+     * Stops the propogation of the given event through the DOM tree. This is
+     * identical to invoking stopPropogation() on the event directly, except
+     * that this function is usable as an event handler itself.
+     *
+     * @param {Event} e
+     *     The event whose propogation through the DOM tree should be stopped.
+     */
+    var stopEventPropagation = function stopEventPropagation(e) {
+        e.stopPropagation();
+    };
+
+    // Prevent events generated due to execCommand() from disturbing external things
+    clipboardContent.addEventListener('copy',  stopEventPropagation);
+    clipboardContent.addEventListener('paste', stopEventPropagation);
+
     /**
      * A stack of past node selection ranges. A range convering the nodes
      * currently selected within the document can be pushed onto this stack