Web page embedding not working in Chrome - Linux

[cirrus3d]

Hi,
using Moodle 2.7.1+ and mod_tab version 2.2.0 (Build: 2014040200)
I embedded a webpage using this module. In firefox it shows ok, In chrome a white screen is shown.

Firefox (31.0 - Ubuntu Linux):

Chrome (Version 36.0.1985.125 - Ubuntu Linux)

My debugger error in chrome shows: "Unable to embed external link. Your browser may be missing a required plugin or the link type might not be supported for embedding at this time."