Clicking the button sends the request, but the form isn't replaced with the media embed, which makes it seem like the button is broken to a user unless they refresh the page.
Thank you for reporting this issue, it has now been resolved. We are aiming to include any changes that have been made in a future XF release (2.3.0 Beta 6).
Change log:
Port the XF.CookieConsentForm handler from XF 2.2.