3.28 Release Notes has incorrect right click description
Originally reported at https://bugzilla.gnome.org/794241
GNOME 3.28 Release Notes
In the "Extended Device Support" section, the description of right click (secondary click) behavior is wrong. Both fingers must be clicked simultaneously to trigger the action. The technique described in the Release Notes doesn't work (hold one finger down and then tap with another finger).
I provided some explanation of the GNOME 3.28 feature at https://jeremy.bicha.net/2018/02/12/gnome-tweaks-3-28-progress-report-2/