https://jam.dev/c/f3a332a5-039d-4f91-9c3b-be1c93aaea52
The download page for the gp builder does not refresh to show completed project. I can open a new tab or click refresh and see the finished project, but if I don't the page will never reload (tested out to 5 minutes, whereas the project is finished in seconds in chrome).
I can only reproduce this behaviour in Firefox, not Chrome. I have not tested in Linux, just windows 10.