Hi,
I'm updating my iPhone app (iPhone only) to be ready with iOS 26.
I'm building my app using Xcode 26.0 beta 6 (17A5305f) and testing it on an iPad running iPadOS 26 (23A5326a).
I found an issue with my new app icon updated using Icon Composer and I was able to find the issue.
An iPhone only app running on iPadOS 26 doesn't use the provided app icon. It always displays the "standard" light icon.
I just added iPad in Supported Destinations and the app icon now respect light/dark/translucent/tinted modes on the Home Screen.
I submitted feedback FB19768667
I found a workaround; not documented for the moment.
You can use this build setting configuration for asset catalog:
ASSETCATALOG_OTHER_FLAGS = "--enable-icon-stack-fallback-generation=disabled";
Make sure you also checked Include all app icon assets option if you want a different icon for iOS 18 and lower and have a combination of AppIcon in an asset catalog and an .icon file.