Can't even click edit , window ...


I recently install ue4 4.12.5 for a tutorial , but when I want to click on edit or window etc , nothing happens.
It’s the same when I want to import something , when i try to change the skeleton , i can’t choose something else.
Another exemple when I change my keyboard shortcut , when I want to override a button , the option “override” didn’t appear.
So i thinkk that when I have the choice to pick something else , i can’t because click on the button doesn’t do a thing.
I had the same problem on the version 4.13.x.
Sorry for my bad english , it’s not my native language.

Hope that someone can help me.

Someone can help ? :frowning: