My HomePod OG 2nd Gen keeps playing music by itself

Not sure what’s going on, but my HomePod OG (2nd gen) randomly starts playing music by itself every 20 minutes or so. I already tried cleaning the touchscreen (thought maybe it was registering ghost touches), but it didn’t help. I even reset it completely and the issue is still happening.

Anyone else dealing with this? Any ideas on how to fix it?