Call to deprecated method t3lib_beUserAuth::trackBeUser()
Each request to the backend calls the deprecated method t3lib_beUserAuth::trackBeUser() automatically. This method is deprecated since TYPO3 3.6 and should not be used in the Core at all.
The call in init.php to the mentioned method gets removed - however the method will stay in the class t3lib_beUserAuth if anyone still uses it. This way the deprecation log does not get flooded anymore.
(issue imported from #M12483)