Dead sims are not greyed out in the relationship panel/Family tree

I figured while I had a vanilla game going to test that hat bug I would test this again as well, this is with all mods removed (mod folder on desktop), cache cleared, last exceptions removed etc

Tested this in a new save with new sims, two sims drowned in the pond from get famous and showed properly as ghosts in the relationship panel (although not in the wants bubble or in the phone call screen)
I then had Nancy  Landgraab killed by a killer rabbit and she did not show as a ghost.
I traveled to Mt Komerebi and had Travis Scott and Marcus Flex freeze to death and they both appeared properly as ghosts
I then had Moira Fyres killed by a murphy bed and she did not appears as a ghost
I then had another sim freeze to death and they did not show up as a ghost in the relationship panel

All of these deaths were done through gameplay properly with no cheats except for Nancy whom I use the Kill -> slain by a rabbit cheat on. 

As you can see, it seems to be a bit random as to what does and does not properly trigger ghost visual vs no ghost. And sometimes they show as ghosts in some panels but not others such as pop ups vs relationship panel or the family tree.

(does not show as ghost)

(ghost in panel but not ghost in want bubble)

(ghost in relationship panel but not in phone call)

(does not show as ghost in relationship panel, but does show as ghost in phone call)

(does not show as ghost in panel)

I could keep going but I think this is hopefully enough to show that there is something amiss.