Has anyone else seen this with WW? If an NPC starts autonomy sex, one can click on the sim, then Wicked > NPC Sex > Invite, choose type, choose sims, and choose animation, but the new participants do not join in, and the selected animation does not run.
If the player sim tries to join in, they can, but again cannot invite more NPCs. The above sequence still happens.
BUT.
If the player initiates NPC sex, they can add as many sims as they choose. Which is why I had Eliza Pancakes pull a longer and longer train in the middle of Burners & Builders. FOR SCIENCE!!
(She enjoyed it too, I think.

)