I've been searching "isparent:true ischild:true" to clean up daisy chains and things that should be pooled. One thing that makes this difficult is that some child posts will appear as both parents and children in the search results, but aren't actually. One instance is post #5188819, which is currently on the front page of "isparent:true ischild:true" despite not having a child. Is this a bug or something I'm missing?