Feedback on the Lenovo ThinkPad X250 - Wolverine2

My question below is my first attempt at dealing with a problem of the X250, that has not been escalated the the status
of a bug.

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1506817

Original question:

I bought a new X250 from Lenovo and installed ubuntu 15.04. Everything worked,
except
the mouse button.
1 out of 10 times, when I click the mouse, say to select some text, when I let go of the button, it "doesn't let go"
It stays selected.
To unselect I must return to the place on the screen where I clicked on the mouse, and then click a second time, and
it unselelects.

I believed this was a hardware issue since a USB external mouse did not have this problem.

I sent the computer back 3 times to lenovo (Memphis TN) for repair. Each time it came back and the problem continued.

The last time they reinstalled Windows 8. WHen I boot into Win8, I do not see the problem. But when I boot into 15.04,
I do see the problem.

This then seems to be a problem with the software drivers in 15.04, for the Lenovo X250.

When I use a USB mouse with 15.04, I see no problem.

I received the computer on Aug 3, 2015, and now it is Oct 6. Thus two mons later this issue is still alive.
Three times returned, still not fixed.

Is anyone else having this problem?

Jont Allen
<email address hidden>