In an assembly , i am having troubles controlling parts visibility with      constraints mode

1 - when adding constraints, hiding a part unselects any face on that part on selecting another parts face  .  very inconvenient .  is there a fix to this  ?

2 - in constraint mode, the "show all" option in tree feature manager is absent

one has to manually search hidden parts in assembly tree  ( with the tree overlapping model image due to constraint dialog .....)   .

is there a "show all"  option while in constraint mode ?