Yeah, the jsfiddle “show” page uses an IFRAME too that is higher than the actual parent page viewport and that’s why this happens. You won’t see anything like this on a regular non-framed page.
As for the other issue you mention – it seems on one of your test computers the resolution is smaller and the browser window is not wide enough to display the desktop mode dropdowns but instead shows the menu in the responsive collapsible mode. You can test that on any computer or browser by manually adjusting the width of the browser window.
As for paid support, I still have some planned work on some new features and once they are ready, this will be the foundation for the 1.0.0 release. There might also be one or two betas before the final 1.0.0 release. Once it’s released, we’ll start offering paid support to interested users but not before that.
Cheers!