However, if selected, the Spanish filter list (http://abp.mozilla-hispano.org/nauscopio/filtros.txt) also filters ALL goo.gl popups because it includes this ||goo.gl^$popup. I tried to whitelist goo.gl but it didn't work...
Actually it is properly implemented in net request handler. The problem was introduced with the fallback mechanism for popup blocking introduced because the main one wasn't working for Opera (#297).
From the Chrome Store:
Good point.