the new version uses 'vehicle' instead of 'possession'. I have found it easier to just create a new bar and then swap over my buttons and bindings as making the change will reset the bar completely

edit: I also discoverd that you still need to use the 'pet' selection in some instances also. Same thing as before, just select everything on a new bar then swap the original bar to the new bar. Easiest way I have found so far.