Docs: reworded the Elasticsearch/OpenSearch result-window note and clarified that reports, previews, and classification store listings are exceptions to the global pagination config.

Harden pagination config validation
Drop non-integer entries from pimcore_studio_ui.pagination.page_size_options instead of silently casting them, and reject non-integer input (e.g. 20.5,20,5) in the page-size CreatableSelect.
Replace the remaining hardcoded default page sizes with appConfig.defaultPageSize for consistency.

Author: SimonCremer

assets/js/src/core/components/pagination/pagination.tsx

@@ -16,7 +16,6 @@ import { useTranslation } from 'react-i18next'
 import { useStyles } from '@Pimcore/components/pagination/pagination.styles'
 import cn from 'classnames'
 import { appConfig } from '@Pimcore/app/config/app-config'
-import {DEFAULT_PAGE_SIZE} from "@Pimcore/modules/user/management/detail/tabs/references/constants";
 
 export interface PaginationProps extends Omit<BasePaginationProps, 'pageSize' | 'defaultCurrent' | 'onShowSizeChange' | 'responsive' | 'totalBoundaryShowSizeChanger'> {
 }
@@ -29,7 +28,7 @@ export const Pagination = (props: PaginationProps): React.JSX.Element => {
 
   const defaultProps: Partial<PaginationProps> = {
     current: 1,
-    defaultPageSize: DEFAULT_PAGE_SIZE,
+    defaultPageSize: appConfig.defaultPageSize,
     pageSizeOptions: appConfig.pageSizeOptions,
     showSizeChanger: false,
     simple: true,
@@ -61,8 +60,14 @@ export const Pagination = (props: PaginationProps): React.JSX.Element => {
   })) ?? []
 
   const onSelectChange: SelectProps['onChange'] = (value) => {
+    const parsedValue = Number(value)
+
+    if (!Number.isInteger(parsedValue)) {
+      return
+    }
+
     setCurrent(1)
-    setPageSize(Number(value))
+    setPageSize(parsedValue)
   }
 
   const itemRenderer: PaginationProps['itemRender'] = (page, type, originalElement) => {
@@ -112,15 +117,15 @@ export const Pagination = (props: PaginationProps): React.JSX.Element => {
         <CreatableSelect
           disabled={ paginationProps.disabled }
           inputType="number"
-          numberInputProps={ { min: 1 } }
+          numberInputProps={ { min: 1, precision: 0 } }
           onChange={ onSelectChange }
           onCreateOption={ (value) => ({
             value,
             label: `${value} / ${t('pagination.page')}`
           }) }
           options={ selectOptions }
           popupMatchSelectWidth={ false }
-          validate={ (value) => !isNaN(parseInt(value)) && parseInt(value) > 0 }
+          validate={ (value) => /^\d+$/.test(value.trim()) && Number(value) > 0 }
           value={ String(pageSize) }
           width={ 112 }
         />

assets/js/src/core/modules/data-object/listing/data-layer/hooks/use-data-query-helper.ts

@@ -16,7 +16,7 @@ import { useClassDefinitionSelection } from '../../decorator/class-definition-se
 import { useData } from '@Pimcore/modules/element/listing/abstract/data-layer/provider/data/use-data'
 import { useAvailableColumns } from '@Pimcore/modules/element/listing/decorators/utils/column-configuration/context-layer/provider/available-columns/use-available-columns'
 import { useLanguageSelection } from '@Pimcore/components/language-selection'
-import {DEFAULT_PAGE_SIZE} from "@Pimcore/modules/user/management/detail/tabs/references/constants";
+import {appConfig} from "@Pimcore/app/config/app-config";
 
 export const useDataQueryHelper: SettingsProviderProps['useDataQueryHelper'] = () => {
   const { useElementId } = useSettings()
@@ -80,7 +80,7 @@ export const useDataQueryHelper: SettingsProviderProps['useDataQueryHelper'] = (
         filters: {
           includeDescendants: true,
           page: 1,
-          pageSize: DEFAULT_PAGE_SIZE
+          pageSize: appConfig.defaultPageSize
         }
       }
     }

assets/js/src/core/modules/element/editor/shared-tab-manager/tabs/dependencies/components/pagination/pagination.tsx

@@ -37,7 +37,7 @@ export const Pagination = (props: PaginationProps): React.JSX.Element => {
   return (
     <PimPagination
       current={ props.page }
-      defaultPageSize={ 20 }
+      defaultPageSize={ appConfig.defaultPageSize }
       onChange={ props.onChange }
       pageSizeOptions={ appConfig.pageSizeOptions }
       showSizeChanger

assets/js/src/core/modules/element/listing/decorators/paging/context-layer/paging/provider/paging-provider.tsx

@@ -9,7 +9,7 @@
  */
 
 import React, { createContext, useMemo, useState } from 'react'
-import {DEFAULT_PAGE_SIZE} from "@Pimcore/modules/user/management/detail/tabs/references/constants";
+import {appConfig} from "@Pimcore/app/config/app-config";
 
 export interface PagingData {
   page: number
@@ -24,7 +24,7 @@ export const PagingContext = createContext<PagingContextProps>(undefined)
 
 export const PagingProvider = ({ children }: { children: React.ReactNode }): React.JSX.Element => {
   const [page, setPage] = useState(1)
-  const [pageSize, setPageSize] = useState(DEFAULT_PAGE_SIZE)
+  const [pageSize, setPageSize] = useState(appConfig.defaultPageSize)
 
   return useMemo(() => (
     <PagingContext.Provider value={ { page, setPage, pageSize, setPageSize } }>

doc/03_Configuration_and_Administration/01_Configuration/07_Pagination.md

@@ -19,8 +19,9 @@ pimcore_studio_ui:
 - `page_size_options` is a comma separated list of page sizes offered in the page-size changer. 
 - `default_page_size` is the page size a listing starts with before the user picks another option. The default value should be included in the `page_size_options`.
 
-> **Note:** Elasticsearch and OpenSearch limit how many results can be fetched in a single request
-> (by default 10,000, controlled by the `index.max_result_window` index setting). Make sure the
-> largest value in `page_size_options` does not exceed that limit, or listings using it will fail.
+> **Note:** Elasticsearch and OpenSearch limit each request's result window (`from + size`) to
+> `index.max_result_window` (10,000 by default). Keep every requested page offset plus page size
+> within that limit; limiting only the largest page-size option does not prevent deep-page failures.
 
-Both settings apply globally to all paginated listings in the UI.
+Both settings apply globally to the most paginated listings in the UI. 
+There are exceptions for reports, previews, and classification store listings which have an individual configuration.

src/DependencyInjection/PimcoreStudioUiExtension.php

@@ -74,7 +74,7 @@ public function load(array $configs, ContainerBuilder $container): void
 
         $container->setParameter(
             'pimcore_studio_ui.pagination.page_size_options',
-            array_map(static fn (string $option): int => (int) trim($option), explode(',', $config['pagination']['page_size_options']))
+            $this->parsePageSizeOptions($config['pagination']['page_size_options'])
         );
 
         $container->setParameter(
@@ -83,6 +83,29 @@ public function load(array $configs, ContainerBuilder $container): void
         );
     }
 
+    /**
+     * Parses a comma-separated string of page size options into a list of integers.
+     * Non-numeric or malformed entries are silently discarded.
+     *
+     * @param string $pageSizeOptions comma-separated list of page sizes, e.g. "10, 25, 50"
+     *
+     * @return int[] the parsed page size options
+     */
+    private function parsePageSizeOptions(string $pageSizeOptions): array
+    {
+        $options = [];
+
+        foreach (explode(',', $pageSizeOptions) as $option) {
+            $option = trim($option);
+
+            if (ctype_digit($option)) {
+                $options[] = (int) $option;
+            }
+        }
+
+        return $options;
+    }
+
     /**
      * Registers the configured studio url_path under the "studio" Pimcore context
      * so site resolution and document routing are bypassed for studio requests.