Further to above, I believe the latest update has addressed this issue – I also found the setting to turn off “Keep the page number in the URL”. However, in Safari it works perfectly, after clicking into a product and then hitting back on the browser button, I am taken to exactly the same position in infinite scroll from where I left. But in Chrome and Firefox, this is not the case – I am taken to around halfway in the infinite scroll page, no matter where I left from. Is this an issue with the browsers or can this be fixed in the theme?