We’ve been using the new Icon Composer–generated app icons for our existing universal bundle (iOS + Mac Catalyst) app. The icons work perfectly for iOS on the App Store.
On macOS Tahoe (macOS 26), however, the App Store listing doesn’t display the app icon — it just shows placeholder while downloading. After the app is installed, the icon displays fine everywhere (Dock, Finder, Launchpad, etc.).
Setup:
- using .iconset generated via Icon Composer, bundled with .png inside the .icon file.
- On older macOS App Stores, the app icon shows as expected.
- On Tahoe App Store only, the issue appears.
Could this be because the App Store expects .svg variants inside the .icon file for proper display in the Store? Or is there any updated requirement for Mac App Store metadata icons vs. bundled app icons?
Any guidance would be much appreciated.