Manage task settings with keyboard only

Task settings can be accessed with CRTL + . and it is possible to cycle through all options with tab. What is currently missing is a key (Esc ?) or a short cut (CRTL + . for a second time ?) to close the task settings window again.

My suggestion: Please add the last missing feature (= exiting with a key / short-cut) to make managing a task possible with a only a keyboard.