I am looking to refactor some apps so that they can render well under Opera Mini using Extreme Mode data saving.
To enable me to debug, I am tunnelling my local dev environment to render the app via ngrok for public access but for some reason when I switch to Extreme Mode data saving on my Opera Mini app I get a blank page.
Opera Mini App Version: 65.2.2254.63594
Any pointers on why this could be happening?