Help modifying Bifold / regular door combo for bath

what exactly is the pain in the neck? is it that last little pull while shutting it to get it to lock shut? should be lots of ways to address that issue.
my closets in my S&B have bifold doors, my last motorhome had one on the bed room. I changed the solid door to a bifold on the door to my basement. what is the issue?
bumpy