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.
A. Belfodil, A. Belfodil, and M. Kaytoue. Joint European Conference on Machine Learning and Knowledge Discovery in Databases, page 500--516. Springer, (2018)