WORKAROUND !
…that seems to work:
- install plugin “Prototype Quick Link”: https://www.figma.com/community/plugin/832335368157959508/Prototype-Quick-Link
- enter file key (web address of your file)
- create a Flow starting point on the page you want to jump to
- stay on that page and use Prototype Quick Link to copy the address of the Flow starting point to clipboard
- create an interaction at the page you want to jump off from, choose “open link” and paste the address as a link.