This works for me, however, instead of looking for the device `TPPS/2 Elan Trackpoint`, I had to use the id of `TrackPoint Keyboard 2`. The downside of this fix is that pasting with the middle button does not work anymore.
R. Kumar, A. Tomkins, S. Vassilvitskii, and E. Vee. Proceedings of the Eighth ACM International Conference on Web Search and Data Mining, page 359--368. ACM, (2015)