I am using IDEA on Ubuntu/Unity for the first time.
I already managed to disabled all conflicting keyboard shortcuts in Ubuntu.
However I am still looking for a way to enable middle mouse button for navigation in IDEA.
Currently in the editor the middle mouse button just Pastes any previously selected text.
So far I have only learned that this behaviour is deeply rooted in X11 and there seems to be no way to change it (except for disabling the middle mouse button altogether which is not what I want).
Any suggestions? Over the last decade of using IDEA this shortcut has become so deeply ingrained that I really don't want to give it up.