I've noticed the same thing with my T530. The Windows drivers for the Thinkpad also don't let you set the middle trackpoint button to middle-click. There was a

I've noticed the same thing with my T530. The Windows drivers for the Thinkpad also don't let you set the middle trackpoint button to middle-click. There was a way to get it to work by editing the registry, but that's stopped working in recent versions too. I don't understand why Lenovo keeps putting out user-hostile driver updates for Windows. I don't see how it benefits Lenovo, so I guess it's just total incompetence. And yeah, just like you, I find the default behavior under both Fedora and Ubuntu to be perfect.