Schon richtig, aber das gleich die gesamte Bestandskonfig in die Tonne getreten wird finde ich gefährlich und das geht aus dem Hinweis auch nicht hervor.
The administrators should be able to read and understand the errata file. If they don't do so, they cannot complain after due to an unexpected behavior. Your question here means that you don't care much 
This is not our problem.
Maybe that the big red warning that we add in all new release announcements are not red enough for you. Or maybe you're just daltonian and thus, you see the red color as the green color?
To be serious, just read that errata file before upgrading to a new version and act accordingly.
Thank you for your understanding.