Why not show in "My assgined test caes" when part of cases of one test set is assigend to me?

Hi,

I created one test set for one iteration, then assgine test set to userA.

In test set detail page, part of set cases is assigned to userA, and rest cases is assigned to userB.

Bug there is no assigned test cases or set in userB's My page, why?

Thanks,

Yan