diff --git a/packages/examples/src/examples/nestedCategorization.ts b/packages/examples/src/examples/nestedCategorization.ts
new file mode 100644
index 000000000..1d6a1ee31
--- /dev/null
+++ b/packages/examples/src/examples/nestedCategorization.ts
@@ -0,0 +1,176 @@
+/*
+  The MIT License
+  
+  Copyright (c) 2023 EclipseSource Munich
+  https://github.com/eclipsesource/jsonforms
+  
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the 'Software'), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+  
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+  
+  THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+  THE SOFTWARE.
+*/
+import { registerExamples } from '../register';
+
+export const schema = {
+    type: 'object',
+    properties: {
+        cat1: {
+            type: 'object',
+            properties: {
+                subcat11: {
+                    type: 'string'
+                }
+            }
+        },
+        cat2: {
+            type: 'object',
+            properties: {
+                subcat21: {
+                    type: 'string'
+                },
+                subcat22: {
+                    type: 'string'
+                }
+            }
+        },
+        cat3: {
+            type: 'object',
+            properties: {
+                subcat31: {
+                    type: 'string'
+                },
+                subcat32: {
+                    type: 'string'
+                },
+                subcat33: {
+                    type: 'string'
+                }
+            }
+        }
+    }
+}
+
+export const uischema = {
+    type: 'Categorization',
+    elements: [
+        {
+            type: 'Category',
+            label: 'Cat1',
+            elements: [
+                {
+                    type: 'Categorization',
+                    elements: [
+                        {
+                            type: 'Category',
+                            label: 'SubCat1-1',
+                            elements: [
+                                {
+                                    type: 'Control',
+                                    scope: '#/properties/cat1/properties/subcat11'
+                                }
+                            ]
+                        }
+                    ]
+                }
+            ]
+        },
+        {
+            type: 'Category',
+            label: 'Cat2',
+            elements: [
+                {
+                    type: 'Categorization',
+                    elements: [
+                        {
+                            type: 'Category',
+                            label: 'SubCat2-1',
+                            elements: [
+                                {
+                                    type: 'Control',
+                                    scope: '#/properties/cat2/properties/subcat21'
+                                }
+                            ]
+                        },
+                        {
+                            type: 'Category',
+                            label: 'SubCat2-2',
+                            elements: [
+                                {
+                                    type: 'Control',
+                                    scope: '#/properties/cat2/properties/subcat22'
+                                }
+                            ]
+                        }
+                    ]
+                }
+            ]
+        },
+        ,
+        {
+            type: 'Category',
+            label: 'Cat3',
+            elements: [
+                {
+                    type: 'Categorization',
+                    elements: [
+                        {
+                            type: 'Category',
+                            label: 'SubCat3-1',
+                            elements: [
+                                {
+                                    type: 'Control',
+                                    scope: '#/properties/cat3/properties/subcat31'
+                                }
+                            ]
+                        },
+                        {
+                            type: 'Category',
+                            label: 'SubCat3-2',
+                            elements: [
+                                {
+                                    type: 'Control',
+                                    scope: '#/properties/cat3/properties/subcat32'
+                                }
+                            ]
+                        },
+                        {
+                            type: 'Category',
+                            label: 'SubCat3-3',
+                            elements: [
+                                {
+                                    type: 'Control',
+                                    scope: '#/properties/cat3/properties/subcat33'
+                                }
+                            ]
+                        }
+                    ]
+                }
+            ]
+        }
+    ]
+};
+
+export const data = {};
+
+registerExamples([
+    {
+        name: 'nestedCategorization',
+        label: 'Nested Categorization',
+        data,
+        schema,
+        uischema
+    }
+]);
diff --git a/packages/examples/src/index.ts b/packages/examples/src/index.ts
index a9b955b2e..0bd5c7af9 100644
--- a/packages/examples/src/index.ts
+++ b/packages/examples/src/index.ts
@@ -30,6 +30,7 @@ import * as anyOfOneOfAllOfResolve from './examples/anyOf-oneOf-allOf-resolve';
 import * as array from './examples/arrays';
 import * as arrayI18n from './examples/arraysI18n';
 import * as nestedArray from './examples/nestedArrays';
+import * as nestedCategorization from './examples/nestedCategorization';
 import * as arrayWithDetail from './examples/arrays-with-detail';
 import * as arrayWithDetailAndRule from './examples/arrays-with-detail-and-rule';
 import * as arrayWithCustomChildLabel from './examples/arrays-with-custom-element-label';
@@ -100,6 +101,7 @@ export {
   array,
   arrayI18n,
   nestedArray,
+  nestedCategorization,
   arrayWithDetail,
   arrayWithDetailAndRule,
   arrayWithCustomChildLabel,
diff --git a/packages/material-renderers/src/layouts/MaterialCategorizationLayout.tsx b/packages/material-renderers/src/layouts/MaterialCategorizationLayout.tsx
index 38c956944..65c862f3f 100644
--- a/packages/material-renderers/src/layouts/MaterialCategorizationLayout.tsx
+++ b/packages/material-renderers/src/layouts/MaterialCategorizationLayout.tsx
@@ -22,7 +22,7 @@
   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   THE SOFTWARE.
 */
-import React, {useState, useMemo} from 'react';
+import React, { useState, useMemo } from 'react';
 import { AppBar, Hidden, Tab, Tabs } from '@mui/material';
 import {
   and,
@@ -92,12 +92,21 @@ export const MaterialCategorizationLayoutRenderer = (props: MaterialCategorizati
     t
   } = props;
   const categorization = uischema as Categorization;
-  const [activeCategory, setActiveCategory]= useState<number|undefined>(selected??0);
+  const [previousCategorization, setPreviousCategorization] = useState<Categorization>(uischema as Categorization);
+  const [activeCategory, setActiveCategory] = useState<number>(selected ?? 0);
   const categories = useMemo(() => categorization.elements.filter((category: Category) =>
     isVisible(category, data, undefined, ajv)
-  ),[categorization, data, ajv]);
+  ), [categorization, data, ajv]);
+
+  if (categorization !== previousCategorization) {
+    setActiveCategory(0);
+    setPreviousCategorization(categorization);
+  }
+
+  const safeCategory = activeCategory >= categorization.elements.length ? 0 : activeCategory;
+
   const childProps: MaterialLayoutRendererProps = {
-    elements: categories[activeCategory].elements,
+    elements: categories[safeCategory] ? categories[safeCategory].elements : [],
     schema,
     path,
     direction: 'column',
@@ -108,13 +117,13 @@ export const MaterialCategorizationLayoutRenderer = (props: MaterialCategorizati
   };
   const onTabChange = (_event: any, value: any) => {
     if (onChange) {
-      onChange(value, activeCategory);
+      onChange(value, safeCategory);
     }
     setActiveCategory(value);
   };
 
   const tabLabels = useMemo(() => {
-    return categories.map((e: Category) => 
+    return categories.map((e: Category) =>
       deriveLabelForUISchemaElement(e, t)
     )
   }, [categories, t])
@@ -122,17 +131,18 @@ export const MaterialCategorizationLayoutRenderer = (props: MaterialCategorizati
   return (
     <Hidden xsUp={!visible}>
       <AppBar position='static'>
-        <Tabs value={activeCategory} onChange={onTabChange} textColor='inherit' indicatorColor='secondary' variant='scrollable'>
+        <Tabs value={safeCategory} onChange={onTabChange} textColor='inherit' indicatorColor='secondary' variant='scrollable'>
           {categories.map((_, idx: number) => (
             <Tab key={idx} label={tabLabels[idx]} />
           ))}
         </Tabs>
       </AppBar>
       <div style={{ marginTop: '0.5em' }}>
-        <MaterialLayoutRenderer {...childProps} />
+        <MaterialLayoutRenderer {...childProps} key={safeCategory} />
       </div>
     </Hidden>
   );
 };
 
 export default withAjvProps(withTranslateProps(withJsonFormsLayoutProps(MaterialCategorizationLayoutRenderer)));
+