One critical issues, both reproducible on iOS 18 and 26, suggesting they were introduced when compiling with the iOS 26 SDK:

Issue 1: When updating from the Xcode 16 build to the Xcode 26 build, apps are blocked prematurely at random times, even if the user hasn’t reached the set time limit.

Apps are being blocked at random times, even when the user has not reached the set time limit

Steps to reproduce the behavior:

  1. Open the Opal app and set a time limit for an app (e.g., 40 mins).

  2. Do not use the app in question.

  3. Update Opal to version 3.127 (2209241892).

  4. A push notification is received that the app will be blocked in 20 mins, but it gets blocked in 9 mins.

    1.png

    2.png

Next steps:

Investigate changes to screen time API for iOS 26.