diff -u b/core/misc/ajax.js b/core/misc/ajax.js
--- b/core/misc/ajax.js
+++ b/core/misc/ajax.js
@@ -131,10 +131,7 @@
         elementSettings.url = href;
         elementSettings.event = 'click';
       }
-      const type = $linkElement.data('ajax-type');
-      /**
-       * In case of setting custom ajax type for link we rewrite ajax.type.
-       */
+      var type = $linkElement.data('ajax-type');
       if (type) {
         elementSettings.type = type;
       }
@@ -231,7 +228,7 @@
       },
       dataType: 'json',
       jsonp: false,
-      type: ajax.type,
+      type: ajax.type
     };
     if (elementSettings.dialog) {
       ajax.options.data.dialogOptions = elementSettings.dialog;
diff -u b/core/modules/views/js/ajax_view.js b/core/modules/views/js/ajax_view.js
--- b/core/modules/views/js/ajax_view.js
+++ b/core/modules/views/js/ajax_view.js
@@ -93,7 +93,7 @@
       submit: viewData,
       base: false,
       element: link,
-      type: 'GET',
+      type: 'GET'
     });
     this.pagerAjax = Drupal.ajax(selfSettings);
   };
only in patch2:
unchanged:
--- a/core/misc/ajax.es6.js
+++ b/core/misc/ajax.es6.js
@@ -315,6 +315,13 @@
         elementSettings.url = href;
         elementSettings.event = 'click';
       }
+      const type = $linkElement.data('ajax-type');
+      /**
+       * In case of setting custom ajax type for link we rewrite ajax.type.
+       */
+      if (type) {
+        elementSettings.type = type;
+      }
       Drupal.ajax(elementSettings);
     });
   };
@@ -381,6 +388,7 @@
    */
   Drupal.Ajax = function (base, element, elementSettings) {
     const defaults = {
+      type: 'POST',
       event: element ? 'mousedown' : null,
       keypress: true,
       selector: base ? `#${base}` : null,
@@ -591,7 +599,7 @@
       },
       dataType: 'json',
       jsonp: false,
-      type: 'POST',
+      type: ajax.type,
     };
 
     if (elementSettings.dialog) {
only in patch2:
unchanged:
--- a/core/modules/views/js/ajax_view.es6.js
+++ b/core/modules/views/js/ajax_view.es6.js
@@ -90,6 +90,7 @@
     this.element_settings = {
       url: ajaxPath + queryString,
       submit: settings,
+      type: 'GET',
       setClick: true,
       event: 'click',
       selector,
@@ -127,6 +128,7 @@
     const selfSettings = $.extend({}, this.element_settings, {
       event: 'RefreshView',
       base: this.selector,
+      type: 'GET',
       element: this.$view.get(0),
     });
     this.refreshViewAjax = Drupal.ajax(selfSettings);
@@ -201,6 +203,7 @@
       submit: viewData,
       base: false,
       element: link,
+      type: 'GET',
     });
     this.pagerAjax = Drupal.ajax(selfSettings);
   };