Problem with both edit and submit

I’m having two seperate issues with my frontend form setup. First, when users submit a form they get redirected to the front page, despite the form being set to Stay on Current Page after submit.

Second, when users go to edit a field containing post content, it ruins the formatting, and even makes pictures not render at all. This means that every time a user wants to edit their content they have to reupload images and fix the formatting. I’ve tried to show this error in this clip: https://streamable.com/p52p8f