No longer running as a PWA/standalone window

Hi,

I love Volumio and have two devices running at home.

I access them by assigning each a fixed IP and having a link for each on my phone’s homescreen.

These were added by going to xx.xx.xx.xx/playback and using Vivaldi’s ‘Add to home screen’ option (Chromium based browser - confirmed same behaviour on Chrome as well).

I wanted to change the IP for a device so deleted one of the shortcuts, and now when I add it it’s saved as a link instead.

So instead of opening a separate window, it now just opens a tab within the browser.

I comsidered rasing this with Vivaldi, but since it occurs with Chrome as well, I thought I’d ask here first.

Am I doing it wrong? - I don’t see any other way to recreate the standalone Volumio window - is it acting as a PWA?

Any assistance would be gratefully recieved.

Thanks.