The problem cited by bensabah is shared by any(?) ad-blocking software that uses the Easylist! What bensabah found is likely to be an anti-ad-blocking software strategy, and that should be reported to those maintaining the Easylist. Websites can find strategies to force you to see ads or restrict their contents otherwise, the same way that users may want to block the ads. This add-on is OK and includes no white-list.