TYPO3 Core

If I try to show a SysFolder I get the starting page.
This would be a kind and nice response.

Did you try to search on google for a solution?

If not, try "typo3 pageNotFound_handling" as search terms.

Trying to show a page from the content-menu of the backend
should not belong to a page-not-found-404-handling used
to handle the frontend of typo3.

In fact these pages of type "sysfolder" or "menu-separator"
are existing for the backend-users trying to show them ;-)

Trying to show a sysfolder results in showning the starting
page of a website.

Trying to show a page of type menu-separator could result
to the same - and not in showing a "Uncaught TYPO3 Exception" -
which is not really elegant, isnt it?

This depends on your configuration of exceptionhandler or the page not found handler.

there are many ways how you don't get the desired page in the FE, even if it perfectly exists in FE! e.g. if you limit the access to a user group in the BE ... so this is perfectly fine