--- a/toolkit/themes/shared/in-content/common.inc.css
+++ b/toolkit/themes/shared/in-content/common.inc.css
@@ -472,16 +472,17 @@ html|a:hover:active,
 }
 
 /* Checkboxes and radio buttons */
 
 /* Hide the actual checkbox */
 html|input[type="checkbox"] {
   opacity: 0;
   width: 0;
+  pointer-events: none;
   position: absolute;
 }
 
 /* Create a box to style as the checkbox */
 html|input[type="checkbox"] + html|label:before {
   display: inline-block;
   content: "";
   vertical-align: middle;