TYPO3 Core

We try to load a model, which has assigned fe_groups, per magic "findBy" method from a repository while being in BE context. Relations on models show the same behaviour.

Problem
When the BE user is in a workspace PageRepository->getWorkspaceVersionOfRecord() is called. There gets a FrontendRestrictionContainer applied to the querybuilder without checking the context:

        // If version found, check if it could have been selected with enableFields on
        // as well:
        $queryBuilder = GeneralUtility::makeInstance(ConnectionPool::class)->getQueryBuilderForTable($table);
        $queryBuilder->setRestrictions(GeneralUtility::makeInstance(FrontendRestrictionContainer::class, $this->context));

This causes models restricted by fe_groups to not be loaded in BE context.