Apple broke web apps in iOS 17 beta and hasn't fixed them
Briefly

In the second beta release of iOS 17.4, which incorporates code to accommodate Europe's Digital Markets Act, Progressive Web Apps (PWAs) have been demoted from standalone apps that use the whole screen to shortcuts that open within the default browser.
PWAs are supposed to make web apps (sites) function more like native apps on mobile devices. They're supposed to be capable (through access to APIs for file system access, media controls, app badging, and full clipboard support), reliable (by functioning in the absence of a network connection), and installable (launchable from a home screen icon in their own standalone window instead of within a browser tab).
Read at Theregister
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