Update:-
TuxInAGalaxy
I did a little more digging and found out that Psensor is described as a 'GTK application'. I believe GTK theming is not currently fully supported in Ubuntu 18.04, so this may be why there is a loss of functionality regarding Psensor in LL 4.0.
Again, if anyone with more knowledge could provided more info about this that would be very helpful.
TuxInAGalaxy
I did a little more digging and found out that Psensor is described as a 'GTK application'. I believe GTK theming is not currently fully supported in Ubuntu 18.04, so this may be why there is a loss of functionality regarding Psensor in LL 4.0.
Again, if anyone with more knowledge could provided more info about this that would be very helpful.
Still running 3.8 and lovin' it (running 5.0 as a triple boot)