Users should be able to dismiss popovers using their keyboard by performing any of the following actions:
- pressing enteragain, in case the element that triggered the popover is still focused
- pressing esc, while the popover is open
- pressing tab to remove the focus from the trigger element and place it on the next focusable element on the page.
ACS:
- Users are able to not only enable, but also dismiss the popover using their keyboard.