I use Google Messages as my text app and rely heavily on web-based access to same. Pre-14, as long as the phone and PC were on the same LAN and the phone was powered on, they could find each other. Now that I have 14 (non-beta, on my Pixel 7 Pro), the web app can't find it unless the phone is unlocked with Messages in the foreground. Background data is enabled for the Messages app.