This exact same thing
This exact same thing happened with my 2018 Honda Civic EX-T!! I came back to find sunroof and all windows rolled down and I even had my keys on the inner desk at work so there NO WAY I touched them — definitely not my fault and definitely not pressing a combination of buttons. I really do believe that someone somewhere did a remote start on their Honda Civic and somehow a glitch out my windows down. This has happened to me twice now since I bought it in October of 2018. If it happens again I’m going to want some compensation or an insurance policy for free if my car gets wet because I’m not going to pay for a wet car if it rains and this glitch happens! No sir! If Honda doesn’t back their cars with integrity I will take my future business elsewhere. I’m in sales and know how important a display of integrity is to consumers, so step it up Honda and roll out a plan for Owners of the models this is effected by. Run some tests and figure out which models are doing this and issue this immediately!