Hi there, I have done a lot trials on GK templates but I couldn't produce the same error you are having. I can see on your website it gets hidden behind previous div element.
I have seen the error only once with minimalist style and with The World News II template but, on later tests both styles worked fine on that template as well.
Tested on eSport / The World News II / Boutique / My folio.
What is your settings in "module settings > advanced settings" > Following below options.
Tab selection from URL: On
Tab selection from cookies: Off
Parse plugins: On
Use CSS: Force Enabled
Use script: Force Enabled
Used JavaScript framework: Mootools
Include jQuery framework: Off
I can send this to programmers however as it is causing the problem with another template and only one user reporting the problem it will be very low priority at the moment.
See you around...