After completion of a Sign/Encrypt operation the "Close window automatically on success" checkbox has the keyboard focus.
After completion of the Verify operation for one (or more) detached signature(s) nothing has the keyboard focus.
After completion of a Decrypt/Verify operation which creates output the Output folder input field has the keyboard focus.

In all cases this makes it more difficult for users of assistive tools to perceive the result of the operation. It would be better to give the keyboard focus to the (first) result text.