I have issues.
One of them is Families that are wall, ceiling or floor based. I have had bad results with hosting on these linked objects. Faced based, that's different. Things have been good here but I did run into some trouble with the annotation objects for my families hiding under the surface of floors rather than showing themselves in plan view.
The simple remedy is to let the model portion of your family protrude ever so slightly above the face of the floor object. If you are making families right now, I hope this helps.