diff --git a/core/css.js b/core/css.js
index b604919ae..14eb3bb78 100644
--- a/core/css.js
+++ b/core/css.js
@@ -677,5 +677,9 @@ Blockly.Css.CONTENT = [
     'width: 0;',
     'height: 0;',
   '}',
+
+  '.blocklyNoPointerEvents {',
+    'pointer-events: none;',
+  '}',
   /* eslint-enable indent */
 ];
diff --git a/core/warning.js b/core/warning.js
index ba3cf3ced..6d0f4d9eb 100644
--- a/core/warning.js
+++ b/core/warning.js
@@ -92,7 +92,7 @@ Blockly.Warning.textToDom_ = function(text) {
       (Blockly.utils.dom.createSvgElement(
           'text',
           {
-            'class': 'blocklyText blocklyBubbleText',
+            'class': 'blocklyText blocklyBubbleText blocklyNoPointerEvents',
             'y': Blockly.Bubble.BORDER_WIDTH
           },
           null)