diff -u b/core/modules/outside_in/js/offcanvas.js b/core/modules/outside_in/js/offcanvas.js
--- b/core/modules/outside_in/js/offcanvas.js
+++ b/core/modules/outside_in/js/offcanvas.js
@@ -147,6 +147,7 @@
         'dialog:beforeclose': function (event, dialog, $element) {
           if ($element.is('#drupal-offcanvas')) {
             $('body').removeClass('js-tray-open');
+            // Remove all *.offcanvas events
             $(document).off('.offcanvas');
             $(window).off('.offcanvas');
             $mainCanvasWrapper.css('padding-' + edge, 0);