Environment Information

Package version(s): @fluentui/react@8.0.0-beta.41, @fluentui/react-button@1.0.0-beta.23
Browser and OS versions: Latest Chromium Edge

Please provide a reproduction of the bug in a codepen:
https://codesandbox.io/s/align-buttons-middle-forked-uun1e

Actual behavior:

MenuButton onClick of IContextualMenuItem is not dismissing after onClick
Expected behavior:

After dismissing it should close the MenuButton