Hi,
I see. Indeed Unity Remote can not be relied upon for very accurate touch events, sometimes it misses events if you are going to fast with your fingers. Try again but slowly, waiting before each move and release.
You can't rely on Unity Remote, you must test on the actual device to guarantee that a behavior is working or not. Unity Remote will help you progress during your day without constantly having to publish, but still, you are expected to export on the device for a final check.
bye,
jean