[BUG] [Google] Cannot preview books on books.google.com with extension enabled #484
Description
Go to books.google.com and search anything. Clicking on result takes you to preview the book.
To protect your security, books.google.com will not allow Firefox to display the page if another site has embedded it. To see this page, you need to open it in a new window. Affects all related google books domains, such as books.google.co.in and so on.
Confirmed that it only happens with clearurls enabled and nothing else on default firefox windows install. It's been like this for a year or so but I just got around to eliminate the cause of the problem recently.