It is not possible to use the Redirect feature of the STK Redirect page template anymore because no items are displayed in the action bar and therefore one cannot access the page dialog.
Oddly enough it looks like the action bar is rendering its items only when the page (or init) directive is preceded by at least one html tag. For instance this works

<p>
[@cms.page /]
...

and this doesn't, as the directive is the first element in the page (eventually rendered as an HTML comment)

[@cms.page /]
...

It used to work before recent changes cause this now useless element was always added at the very beginning

<meta name="gwt:property" content="locale=en"/>