Oakville Subdivision: 1. Locomotive horns do a weird "hiccup" when the button is released, breaking immersion. 2. When coupling to the tank cars on the Petrochemical Chaos scenario, the brakes don't seem to release. Everything in my cab is set up correctly, and will fully charge the lines upon coupling. However, when I release brake pressure, the train will not move. The only remedy I've found to this, is to save, exit, and then resume. At which point, the brakes will release. Unknown if this issue occurs on any other service/scenario at this time.