I had this happen a few times in Firefox. A couple of times it just took me several tries at clicking the x, but once, after I learned cheffery, I had to reload the game to get it to go away.
Hey guys. Can anyone tell me if this was in the game interface (aka the rock was talking to you) or if it was on the website page where you choose new skills? Much appreciated.
This is happening to me in Chrome 5.0.375.99 on PC after getting Mining level 1. The "learn another skill" button opens another tab, but the x button doesn't close the pop-up.