There appears to be a iHost bug effecting Automatic Scenes that trigger Manual Tap to Run Scenes. In a simple test Auto scene which has “Run a manual scene” as its last THEN statement it was found that the Manual Scene ran over 2 minutes after the Auto scene that triggered it. It should have been almost immediatley or within a few seconds. The issue has been reported to Sonoff via iHost Feedback with ticket ID 230048.
This issue seems to be related to the Sonoff ZBTH01 that was the IF statement of the scene.