TYPO3 Core

How to reproduce:

- Save an extbase model object in the fe_user session:

$GLOBALS['TSFE']->fe_user->setKey('ses', 'sessionname', $foo);

- Now retrieve the object from the session:

$foo = $GLOBALS['TSFE']->fe_user->getKey('ses', 'sessionname');

- A complete extbase model object will now be retrieved. However if you use the "update" method of the Repository, the call will fail with the exception:

$fooRepository->update($foo);

The object of type "Foo" given to update must be persisted already, but is new.

If you call _isNew() on the object from the session, it will return false.