---
title: "Breaking: #94861 - Deprecated form mixins removed"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:breaking-94861"
source: "Changelog/11.0/Breaking-94861-DeprecatedFormMixinsRemoved.rst"
typo3-version: "11.0"
typo3-major: 11
type: "breaking"
issue: 94861
forge: "https://forge.typo3.org/issues/94861"
tags: ["Backend", "Frontend", "NotScanned", "ext:form"]
rendered: "2026-09-20T18:31:11+00:00"
---

# Breaking: #94861 - Deprecated form mixins removed {#breaking-94861}

See [forge#94861](https://forge.typo3.org/issues/94861)

## Description {#description}

The deprecated EXT:form setup mixins from `TYPO3.CMS.Form.mixins.*` have been removed.

## Impact {#impact}

Form setup inheriting mixins from `TYPO3.CMS.Form.mixins.*` will not work properly anymore.

## Affected Installations {#affected-installations}

All installations using the deprecated form setup mixins are affected.

## Migration {#migration}

Embed the essential parts from `TYPO3.CMS.Form.mixins.*` or migrate them to custom mixins.