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How to fix RTE in TYPO3 7 LTS for Chrome 73 (and 91)

(Updated for Chrome 91) Google released Chrome 73 recently. Unfortunately this version breaks the functionality of the old Rich Text Editor (RTE) of TYPO3.

While there has been an update for the standalone extension (compatible with TYPO3 v8) and a TYPO3 7 ELTS release, you might be in the unlucky position that your version 8 upgrade is "just in progress" and the issue hits you hard.

For those who need a quick fix we provide the fix in multiple ways:

See the change on github (Updated for Chrome 91!)


Cherry-pick the change

If you are running your TYPO3 straight from a git checkout, you can simply cherry-pick the change:

git fetch "" TYPO3_7-6 && git cherry-pick FETCH_HEAD


Apply the patch manually

Download the patch file to your server and apply the fix manually:

cd typo3_src
patch -p0 < Make_rtehtmleditor__RTE__compatible_with_Chrome_91.patch


Apply the patch via composer

First, install the composer-patches package:

composer require cweagans/composer-patches


Then, copy the patch file provided below into patches/rte.patch of your composer installation.


Finally, add this part to your composer.json:

        "patches": {
           "typo3/cms": {
             "fix rte": "patches/rte.patch"

Note: This fix is only a work around to help you out quickly. We strongly advise to upgrade your TYPO3 to version 8 LTS or higher as soon as possible.


This information applies to TYPO3 7 LTS