AirPods Pro 3 audio balance shifts left after 8B30 update

Hello, following a recent update of my AirPod Pro 3 headphones to version 8B30, when switching modes from noise cancellation, or if the headphones detect a voice, I noticed that the balance seems to shift to the left during music playback; the vocals are heard more clearly on the left. The problem is definitely not hardware-related, as this situation also occurs with a second pair of the exact same headphones. Is anyone else experiencing this issue? Are there any solutions?