You need to enable windowed mode.. downloaded it, but I have an ultrawide monitor (5120x1440), and while it scales lovely, would prefer it to be windowed!
You mean the button behind the quit button? Also, sure that puts it into Windowed mode, but you then can't change the size of the window, so its still that big... ;)
It's probably a false positive from your antivirus. I modified the .exe filer in order to resize the window. I scanned the .exe with several antivirus too.