Thanks for checking the ticket, but you didn't test far enough.
(The button group now shows when it didn't before. I've had a few incidents where elements have disappeared or not displayed without any discernable reason, but it's hard to replicate. I'm not in a testing mode.)
Here's what is not working:
If you click the edit button on the announcements pagebuilder page, the announcements section disappears. The button group displays.
If you click the title of an announcement article, rather than clicking the edit button for the page, and go to the individual article page, clicking the edit button on the article page gives a 403 error. Either way, front-end editing doesn't work.