Of course! The PWA is self-hostable, hackable, and receives updates quicker. However, it doesn't have access to certain native APIs that the native app takes advantage of.
Can I continue to use the Test Flight beta?
Yes, but I recommend switching to the App Store release if you aren't actively involved in testing. It's a more stable release :)
Yep it's a Safari (and its webview) bug. This is a quirk that will haunt this app and I don't think there's much that can be done from developer's side other than porting this app to a native library.
The safari bug is actually resolved in the native app for iOS. It only ignores gestures if you swipe quickly while the view is still transitioning, but it no longer latches which is the safari bug.
The problem is that Ionic view transitions are too slow on swipe back (vs native views) this is an Ionic bug though that can be resolved in a future version of Ionic. Basically the view transitions too slowly and you try to swipe right at the tail end of the animation and this initial gesture is ignored.
But it should no longer "freeze" until you stop all gestures, this is resolved in the native app.