This must have started within the last patch or two. I have now noticed, that in many cases, you don't see an interaction in a sim's queue until they are actually sat at the computer and executing ...
@Stormkeep I just have food mods and my CAS columns & UI extender mod. I do have a few mods that add beverages to the coffee and tea pots, maybe that's why, I will take them out and see, thanks for the tip!