Applied patch, added view page and test function

core/modules/views/js/ajax_view.js

@@ -79,7 +79,7 @@
       // Remove the question mark and Drupal path component if any.
       queryString = queryString
         .slice(1)
-        .replace(/q=[^&]+&?|&?render=[^&]+/, '');
+        .replace(/q=[^&]+&?|page=[^&]+&?|&?render=[^&]+/, '');
       if (queryString !== '') {
         // If there is a '?' in ajaxPath, clean URL are on and & should be
         // used to add parameters.

core/modules/views/tests/modules/views_test_config/test_views/views.view.test_content_ajax.yml

@@ -622,3 +622,47 @@ display:
         - user.permissions
       max-age: 0
       tags: {  }
+  page_2:
+    id: page_2
+    display_title: 'test pagination with filter'
+    display_plugin: page
+    position: 2
+    display_options:
+      pager:
+        type: full
+        options:
+          offset: 0
+          pagination_heading_level: h4
+          items_per_page: 2
+          total_pages: null
+          id: 0
+          tags:
+            next: 'Next ›'
+            previous: '‹ Previous'
+            first: '« First'
+            last: 'Last »'
+          expose:
+            items_per_page: true
+            items_per_page_label: 'Items per page'
+            items_per_page_options: '2, 5, 10, 25, 50'
+            items_per_page_options_all: false
+            items_per_page_options_all_label: '- All -'
+            offset: false
+            offset_label: Offset
+          quantity: 9
+      defaults:
+        pager: false
+      display_description: ''
+      display_extenders: { }
+      path: test-content-ajax-filter
+    cache_metadata:
+      max-age: 0
+      contexts:
+        - 'languages:language_content'
+        - 'languages:language_interface'
+        - url
+        - url.query_args
+        - user
+        - 'user.node_grants:view'
+        - user.permissions
+      tags: { }

core/modules/views/tests/src/FunctionalJavascript/PaginationAJAXTest.php

@@ -254,4 +254,22 @@ protected function assertNoDuplicateAssetsOnPage(): void {
     }
   }
 
+  /**
+   * Tests when a user navigates directly using a page number parameter.
+   */
+  public function testPaginationAjaxWithTitleFilter() {
+    // Visit the page url /test-content-ajax-filter?page=3.
+    $this->drupalGet('test-content-ajax-filter', ['query' => ['page' => 3]]);
+    $session_assert = $this->assertSession();
+    $page = $this->getSession()->getPage();
+
+    // Filter by title using the exposed form.
+    $session_assert->elementExists('css', 'input[name="title"]')->setValue('Node 11 content');
+    $session_assert->elementExists('css', 'input[value="Filter"]')->click();
+    $session_assert->assertWaitOnAjaxRequest();
+
+    $rows = $page->findAll('css', 'tbody tr');
+    $this->assertStringContainsString('Node 11 content', $rows[0]->getHtml());
+  }
+
 }

core/profiles/demo_umami/tests/src/FunctionalJavascript/AssetAggregationAcrossPagesTest.php

@@ -41,7 +41,7 @@ public function testFrontAndRecipesPagesAuthenticated() {
     $this->assertSame(4, $performance_data->getStylesheetCount());
     $this->assertSame(94355, $performance_data->getStylesheetBytes());
     $this->assertSame(2, $performance_data->getScriptCount());
-    $this->assertSame(264076, $performance_data->getScriptBytes());
+    $this->assertSame(264166, $performance_data->getScriptBytes());
   }
 
   /**