Link Preview for Confluence Issue

[Vasia Makrygianni]

I'm using Link Preview for Confluence, but how can I disappear the pop-up window? 

For example. when I pass the mouse over a link content it works but then I cannot disappear this window, only if I pass the mouse over another link or select another page. Is there any short key that I can use in order to  do that? I tried to click anywhere in my page, press they keys "Enter", "escape" but none of them worked.