diff -r 34716fd837a4 -r be944660c56a wp/wp-admin/js/language-chooser.js
--- a/wp/wp-admin/js/language-chooser.js	Tue Dec 15 15:52:01 2020 +0100
+++ b/wp/wp-admin/js/language-chooser.js	Wed Sep 21 18:19:35 2022 +0200
@@ -14,7 +14,7 @@
 	return;
 }
 
-select.focus().on( 'change', function() {
+select.trigger( 'focus' ).on( 'change', function() {
 	/*
 	 * When a language is selected, set matching translation to continue button
 	 * and attach the language attribute.
@@ -26,7 +26,7 @@
 	});
 });
 
-$( 'form' ).submit( function() {
+$( 'form' ).on( 'submit', function() {
 	// Show spinner for languages that need to be downloaded.
 	if ( ! select.children( 'option:selected' ).data( 'installed' ) ) {
 		$( this ).find( '.step .spinner' ).css( 'visibility', 'visible' );