&igu=1

This link (the default provided by a Google Search) refuses to display in my slide-in iFrame...

<a href="https://www.google.com/search?q=ghost+blog+themes" rel="dd">ghost blog themes</a>

Whereas this link (the default provided by a Google Search, with &igu=1 added to the end) does display in my slide-in iFrame...

<a href="https://www.google.com/search?q=ghost+blog+themes&igu=1" rel="dd">ghost blog themes</a>