Blender Version
Broken: 2.8 df1d319a79f

Short description of error
In 2.7 when you were snapping an object that was a parent to other object, it was impossible for the parent to snap onto it's own children since this creates a never ending loop of moving & snapping. In 2.8 when using snapping the children are not recognized that way which causes this problem.
As a side note there's also currently no visual indication in the view layer outliner of what is parented to what. The visual hierarchy is missing.