In Locator, ? operator for Help index does not work

White testing both binary and self compiled creator 2.0.0, ? operator in locator for querying help does not work. Typing "? QMouseEvent" for instance displays no results in the popup and pressing enter does not take me to help. Also just writing "? " displays nothing too, although what you would expect is to see the alphabetically topmost items or last visited help entries.

However, help is installed and works just fine from context help with F1 and help pane.