Gridfieldextensions GridFieldLazyLoader doesn't load by tab click

I’m trying to add GridFieldLazyLoader to a tab and doesn’t seem to work as suppose too.
The logic is to load content when user clicked the tab for witch I’ve added the component ->addComponent(new GridFieldLazyLoader()) but the action is triggered on the main tab (initial page load) and I don’t understand why.
Anyone had any problems with this extension?
Has anyone done something similar (adding ajax behavior to tabs)?