Issues with Tuplets (triples)

I've read many reports from people having issues with tuplets. I decided to play with some triplets, just creating a mock piano score and trying things out. See the attached score for the issue I ran into. Basically I embedded 3 triples within each other. As I added the notes to the inner-most triple, the lines that encompass the triple groups disappeared. They were fine with a triple within a triple, but the third caused problems. I also had a program crash (wish I took a screen shot) when i tried this the first time.