Actually a quicker way is to just click the XP bar
Not sure about you, but when I get the bug my main cursor lags out as well. The original point was to do it without having to move the mouse, but if it's quicker for you to lug it up to the skill bar then close the window, more power to you.
Not sure why it happens but it happened back in the early days.
it happend in beta...I remember a friend reporting that and getting your ship on esd bug ...both bugs still exist today ,though the second one is more rare.They should remove the stupid bug report button ,i find that more annoying than the bugs you report.