I have a very specific problem with multiple associated domains + password autofill and have not been able to find documentation regarding this.
Basically my app has 3 associated domains: domainA, domainB and domainC. All are set up correctly with an apple-app-site-association file and links from any of these domains are recognised and handled by the app as expected (so far so good).
The issue is that in password autofill (in the default OS and 3rd party managers), domainC always appears as the association. The order of applinks in the entitlements file does not affect which domain appears in the password manager. The only "pattern" I found here is that it seems the longest domain (in this case domainC) is the one appearing in the manager but could not find any documentation confirming this.
Does anyone have any experience with password autofill?