If you have installed the NextGen Gallery & find it slightly annoying the page scrolls back to the top when you’re clicking back to the page, here is the fix you’re looking for:
FTP to your site and find the following file:
Search for and comment out the following two lines:
document.documentElement.style.overflowX = '';
Unfortunately, if you auto-update the NextGen Gallery plug-in and this isn’t part of their update, you will need to re-do this.
Much thanks to the WordPress community for finding and sharing a solution.