I just tested your automations and you are correct. There is a bug where the “turn on for X time” value is completely unpredictable and unreliable. Sometimes turn off occurs when motion is no longer detected, sometimes it’s just a random time less than the specified time, and sometimes it actually turns off at the specified time.
Rather than debug this issue for Wyze (I don’t have time today), just do what most of us do by default… don’t specify “turn on for X time”. Just use “Turn on” and create a separate automation trigger for turning off.
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Edit both of your automations and change (uncheck) the action “Turn on for 10 minutes” to simple “Turn on”.
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Create one new Automation Device Trigger to cover turning off for both of your Turn On automations. Set trigger to your bulb (or bulb group) with “has been on for 10 minutes” and action to “Turn off”. Example:
When you tap “Save”, ignore the warning by tapping “Proceed”:
Doing your automation this way will result in light on as long as there is motion from either or both motion sources as motion resets the “Turn off” trigger’s timer. When no motion from either source for 10 minutes, “Turn off” trigger executes and turns off your light.