I have updated PureOS on my Librem 13 v2 this morning and noticed that the secondary (right click) button of the touch pad was behaving like the primary (left click button) when pressing on the right side of the touch pad.
To confirm this bug, I have decided to check on a Librem 15 v3 that was not updated. Before updating, the right click on the touch pad was working correctly. After the update, it was behaving like the left click.
Tapping with 2 fingers still works well however.