TYPO3 Core

You will find the solution here:
https://review.typo3.org/c/Packages/TYPO3.CMS/+/59532/2/typo3/sysext/core/Documentation/Changelog/8.7.x/Feature-83405-AddConfirmationFinisherTemplate.rst
Add your own HTML-Template for the confirmation, handle {message} as you wish and add a path as described in [3]

Elia Konstantin Pietz wrote:

Hello together,
I've tried to create a form with a confirmation message finisher which should render a chosen content element as message.
My problem is that the finisher renders the content element as plain text and not as html. So the output of the finisher is the escaped html source of the chosen content element as plain text.

Patch set 2 for branch master of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/60559

Patch set 3 for branch master of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/60559