No that's pretty common. I bought a brand new battery from Best Buy and always get those readings in cell #1. I initially thought my battery was junk too. I have over 20 flights on that battery now without any issues.
My reason for concern, during the flight I heard a voice from Suri's cousin warning me about my battery voltage anomaly and I'd better land the drone immediately else risk battery damage. Nothing looked amiss while checking the battery levels...but I set the bird down quick regardless. Chart on battery voltage shown below.
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