Use of iFrames is discouraged (not only but also) due security reasons and therefore are blocked by many server configurations (including our server config of course).

The following error messsage appears in the browser console:

Load denied by X-Frame-Options: https://somedomain.com/jenkins/job/some_job/scoverage/packages.html does not permit framing.

If you're intrested to put the change in, I'll try to find time to do it.
thx in advance.