User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:57.0) Gecko/20100101 Firefox/57.0 Build ID: 20171112125346 Steps to reproduce: * Open anywebsite in Firefox for Windows (desktop) * Enable device preview (Ctrl+Shift+M) * Enable touch simulation mode * Scroll the page with the mouse button like you would do with a finger Actual results: Nothing Expected results: Scrolling. Isn't that touch simulation? On a touch device, I can scroll.

Thanks for filing! I agree we should add this ability. I believe it's the same as bug 1282089, so I'll duplicate it to that. Please reopen if it seems different.