Changes in 1.12 broke ALPS v8 trackpoint on DELL E7470
In https://bugs.freedesktop.org/show_bug.cgi?id=106323, we tracked the behavior of my ALPS v8 trackpoint in lots of detail. It needs a small multiplier (0.12) to work.
Commit 43cd2cbf broke this device again by introducing a multiplier of 0.6 for exactly this laptop.
I strongly advise removing the "Latitude E7470 Trackpoint" section from quirks/50-system-dell.quirks again. The commit log says that the factor was taken from systemd's hwdb. It seems that libinput's hwdb was in better shape than systemd's, so at least for my laptop this caused a regression. I can only speculate but odds are that his applies to other Dell models as well.