The problem is described in full with log output in #16844
We are having an issue with TCC prompting users for access to the app group container despite signing with entitlements following all guidelines.
This is a regression from the Feb 2025 Changes discussed in App Groups: macOS vs iOS: Working Towards Harmony
The problem can only be reproduced with Xcode 16.0 and later.
The entitlements for the app include access for the group container with
[Key] com.apple.security.application-groups
[Value]
[Array]
[String] G69SCX94XU.duck
The documentation notes the group name can be arbitrary, e.g. <team identifier>.<group name>.
Cyberduck uses G69SCX94XU.duck
by default. Interestingly enough the alert is not shown when a group name matching the bundle identifier is used, e.g. G69SCX94XU.ch.sudo.cyberduck
.