I am using the Native Share API to share text from my PWA with the phone's installed applications, as described here:
https://developer.mozilla.org/en-US/docs/Web/API/Navigator/share
navigator.share({ text:"My shared text" });
This opens the phone's list of installed apps and lets me choose one of them, and then inserts the text. For example for Twitter it creates a new tweet with the text. Works fine for all apps except Facebook, where it creates a new post, but leaves out the text. Does anyone know why?