After update to 15.005 editor still shows that it's 15.004, maybe nothing in it was changed, backup zip package is available in GLB directory, so you can check what was changed. Editor.exe is in German/Deutsch, EditorE.exe is in English, maybe Start shortcut was wrong or something, when running from proper path it shouldn't appear.
Just be patient for upcomming fixes.
Just be patient for upcomming fixes.