In https://de.wikipedia.org/wiki/Wikipedia:Verbesserungsvorschl%C3%A4ge/Feature-Requests#.22Bearbeitung_abbrechen.22-Schaltfl.C3.A4che_f.C3.BCr_Visual_Editor a user suggested to have a visible tool to abort editing in VE, like there is an "Abort" button in OWE.

Currently, all methods to abort an edit (click the "Read" tab, go back in history, press "Esc") aren't really visible, so new users might be confused how to exit without saving, and may unintentionally save their edits meant for testing only.

The user suggested a visible button next to the "Save" button. Personally I'd prefer an entry in the edit mode switch dropdown ("switch off" is a kind of "switch editing mode").