Hello,
In the latest version 1.30, if the toolbar is enabled it interferes with keyboard navigation using Tab and Shift+Tab in the main window. To demonstrate, make sure that the toolbar is enabled and then hit the tab key a couple of times. The keyboard focus will be placed into a control which prevents further navigation using Tab and ShiftTab. I believe what is happening is that the toolbar panel is being given keyboard focus which is not typical behavior and was probably not intended.
Thanks and regards.