Upload screen disappears if image is clicked

Platform: website

App version number, if a mobile app issue:

Browser, if a website issue: Brave on Linux

URLs (aka web addresses) of any relevant observations or pages: upload

Screenshots of what you are seeing:

Description of problem:

Step 1: Add images on upload screen

Step 2: Complete all info on cards - locality, notes, fields etc.

Step 3: Click on an image on one of the cards to view it enlarged.

Step 4: Upload screen goes blank and one cannot back page, reload or anything else, and I have to start all over again.

This has happened twice now. After I have added all the info :-(