Be careful with old versions!
These versions are displayed for reference and testing purposes. You should always use the latest version of an add-on.
* If pop-ups are blocked after the redirect, the pop-up window will actually be closed and not merely prevented from loading.
* The diagnostic page under chrome://adblockplus/content/errors.html has been removed, it was of very limited use.
For a list of remaining issues see https://adblockplus.org/releases/adblock-plus-27-for-firefox-released