Strange bug show application folder

I got a strange bug recently and I cant trace it. Some times when mouse pointer is over an app in dock finder opens application folder in finder and the app is highlighted!? I tried all kinds of gestures over apps in dock but cant seem to trigger it? What could it be?

that happens when cmd+click an app in dock. Maybe you have configured an action/trigger including cmd?

Yes. Your right. It was command click that i use in Safari on links. Just disabled it to not work over dock. Thanks!