TYPO3 Core

Hi,
after a bit of investigation I think there is something wrong in
TYPO3\CMS\Backend\Security\CategoryPermissionsAspect around lines 68-80

               foreach ($dataProvider->getStartingPoints() as $startingPoint) {
                    if (!in_array($startingPoint, $categoryMountPoints)) {
                        $shallRepopulateTree = true;
                        break;
                    }

                    $uidsInRootline = $this->findUidsInRootline($startingPoint);

                    if (empty(array_intersect($categoryMountPoints, $uidsInRootline))) {
                        $shallRepopulateTree = true;
                        break;
                    }
                }

With the for loop we check whether startingpoints are present in the user's categorymounts,
but the starting points can be (as in my case) subcategories of a category mount points so the if statement is false, the variable $shallRepopulateTree is set to true and the cycle is interrupted, causing the reconstruction of the tree without the categories corresponding to the starting point