I have a multi monitor setup with Windows 10. The primary monitor is not the monitor I use for my DAW. The DAW-monitor is positioned along with my other music gear. An annoying "feature" of Studio One 4 is that modal windows are always opened on the OS primary monitor, and not on the actual monitor where the application resides.
This slows down my workflow, and I also think this breaks with normal "common sense" GUI design principles. Would suggest the next Studio One patch include a fix for this.