When you replace the preferences you are deleting the set you have and replacing with a new default set (using the keyboard shortcuts), or you can replace with a customized backup set you previously saved. See Replace Your Preferences
two days after and a new update it was working back again.
I think it was all related to the preferences.
@Rob: I was using command-Shift and it always works when the black selection tool is active. And also selecting and dragging to create a copy of the object.
It was just strange and frustrating.
Thank you for your answer!