Nutone analog doorbell chime box "fried" using Ring Video Doorbell (2nd generation)

I had a Ring Video Doorbell (2nd generation) installed in circa 2021 or later. I had an analog doorbell chime box inside the house, which was connected to the doorbell transformer. The specs for installing the Ring Video Doorbell (2nd generation) were followed. No jumper cable was needed for the chime box because this unit rings the inside chime. In February 2024, my Ring Video Doorbell (2nd generation) stopped taking a charge. I removed the unit, plugged it into the charging cable provided and re-installed it. When I pressed the doorbell button, my inside chime buzzed and then stopped working. I took the plastic cover off the inside Nutone brand doorbell chime unit, and I saw that the spring and striker had popped out of place, and a plastic piece had melted. I called Ring technical support, and it was explained that this is something they have never heard of. I Googled the situation and found a few people had posted something similar happening. I hired an electrician to install a new Heath Zenith analog doorbell chime, and he checked transformer which is functioning perfectly. He also said the voltage of the transformer meets the specs for the Ring Video Doorbell (2nd generation). My electrician has no explanation as to why the chime box innards “fried.” I am now loathe to re-install my Ring Video Doorbell (2nd generation) unit because I don’t want this to happen again. Does anyone have insight about why the innards of my inside chime box literally popped apart and the plastic melted? Thank you!