Fairbuds XL ANC left and right different

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1

I recently noticed something strange about the ANC behavior of the Fairbuds XL. It looks like the right speaker applies noise cancellation more aggressively compared to the left speaker. This becomes apparent by softly rubbing over the ANC microphone with my finger. On the left speaker, I hear a scratchy sound when I do so. On the right I hear a similar sound when I rub the right ANC microphone, but much louder. Have other people observed this too?

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