Opera ad blocker and SLO propagation

[Kim, Allan]

A little oddity I noticed this week: the built-in Opera ad blocker seems to break SLO propagation.

The Opera ad blocker (among others) works by injecting a massive style sheet into each page, which sets suspect content to "display: none !important". Opera adds this style sheet to the SLO iframes in propagate.vm despite the returned MIME type of application/json. This apparently causes the inline script to fail silently here:

if (content && jQuery.parseJSON(content).result == "Success") {

I tested a third-party ad blocker (AdBlock Plus) on Opera, Firefox and Chrome -- it seems to be free of the problem.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://shibboleth.net/pipermail/users/attachments/20180105/8210abef/attachment.html>