Issue #2137849 by MartiMcFlight, m4olivei, jmuzz: No scrollbar in views style option popup

core/modules/views_ui/js/dialog.views.js

@@ -8,7 +8,7 @@
     var $scroll = $modal.find('[data-drupal-views-scroll]');
     var offset = 0;
     var modalHeight;
-    if ($viewsOverride.length && $scroll.length) {
+    if ($scroll.length) {
       // Add a class to do some styles adjustments.
       $modal.closest('.views-ui-dialog').addClass('views-ui-dialog-scroll');
       // Let scroll element take all the height available.