NetEnt won't be able to fix this unless they want to build there own browser, as Chrome, Safari, FireFox etc all switch off Java Script when the window is out of focus. You'll need to play a Flash game if you want to punt in the background!
I do have a solution though, kick off auto spins in Chrome (or any browser), then if you want to browse etc then launch an alternate browser such as Firefox, Safari or IE, the game will continue to play. It will pause if you go to another window within Chrome (or the browser you launched the game in)it will also pause if you minimise the browser window. Hope that helps
I'm sure someone will come up with a better HTML5 slot soon as it seems to be where everything is heading :nod: