That happened to me too when I tried to create a new map, but I don't think reinstalling will resolve anything.
Cristian, the feeling is just that you click but nothing happens, so you have to click again. Sometimes even click outside to deselect everything and try clicking again. It doesn't happen always, just some times.
It's a bit weird, not too frustrating to demand a fix like crazy, but surely something that makes editing a bit unconfortable.