I'm playing the HTML5 version on Chrome in Windows 10, and clicks don't reliably register. I'd say about 10-20% of the time, when I click on a button, nothing happens. This is especially frustrating when I'm frantically trying to restore power, or when I realize at the last minute I'm late in replenishing coal, and I have to click the button several times before it activates. I didn't have this issue when I tried this game a couple of months ago.