Breaking: #92499 - AdminPanel does not preview hidden Frontend User Groups

See Issue #92499

Description

Admin Panel previously allowed to also render a page with frontend groups that were hidden / disabled. This feature has been removed, in order to ensure consistency for the authentication process.

The AbstractUserAuthentication property showHiddenRecords which was used to transfer this information is removed.

Impact

The Admin Panel selector now only shows a list of non-hidden groups to simulate from.

Using the removed PHP property showHiddenRecords will result in a PHP notice.

Affected Installations

TYPO3 installations with Admin Panel activated and Frontend Groups that are disabled.

Migration

It is recommended to include groups where no user is assigned to for simulation purposes, if this feature is needed to preview content.