In the Creator Hub, the option to provide feedback by creating a post on the Developer Forum is not visible. This issue occurs when attempting to use the “Feedback” button found in the Roblox Creator Documentation.
I can’t reproduce this personally. Are you by any chance logged into an account that doesn’t have access to post in #bug-reports? Only users with such permission can use (and see) that option since using it posts a bug-report.
As you can see, the POST request does have an isPublic parameter, but it seems like it doesn’t display the radiobutton to display your feedback publicly.
EDIT: THe XSRF Token seems to have fixed itself as seen in the screenshot, but it’s indeed weird the isPublic flag is not able to be changed in the browser. Editing the isPublic parameter to true seems to return 200 which doesn’t indicate any issue on that. But I don’t see anything appearing on the forum as far as I know.