Passkeys created in browser work, but app for same services does not recognize passkey
I created passkeys for two shopping sites using Win11/Edge and updated existing logins in 1Password with them. Using them on the laptop in the browser works fine. 1Password prompts for both sites (Amazon and Lowe's) to use the passkey and I'm logged in successfully.
However, on my Google Pixel 7 Pro running Android 15, neither the Amazon nor Lowe's app recognizes that a passkey has already been created. Both apps offer to create a passkey, but I can't save it in 1Password. I also disabled/reenabled 1Password as the passkey manager on the Pixel. That didn't change the behavior, though. I don't think I want to create a new/second passkey anyway. My limited understanding is the value in saving passkeys in 1Password is cross-device usage.
As of now I can use a passkey to login to a service on a Windows device from Edge, but have to use username/password on the Android app for that service. Do I misunderstand how this is supposed to work, or is the expected functionality not working correctly?
1Password Version: 8.19.52
Extension Version: Not Provided
OS Version: Android 15
Browser: Not Provided