---
title: "Breaking: #88657 - Popup configuration in FormEngine dropped"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:breaking-88657"
source: "Changelog/10.0/Breaking-88657-PopupConfigurationInFormEngineDropped.rst"
modified: "2026-09-15T10:46:36+00:00"
---

# Breaking: #88657 - Popup configuration in FormEngine dropped

See [forge#88657](https://forge.typo3.org/issues/88657)

## Description

The options `options.popupWindowSize` and `options.rte.popupWindowSize` used to configure popup sizes have been
removed.

## Impact

These options are not evaluated anymore.

## Affected Installations

All installations using 3rd party extensions relying on the options are affected.

## Migration

In most cases it's fine to remove the configuration.

In the unlikely case one is negatively affected by this change, fetch the configuration from backend user's TSConfig and
use it where it is required.