Conflict with mult-steps registration form

Hi,

I tried to customized the registration form to multiple steps. I posted the issue at https://www.drupal.org/node/2388173.

The problem I found is that the multiple steps code conflict with BOTCHA. When BOTCHA is enabled, the second step (the last step) repeatedly called (the next step handler is called). BOTCHA change the register form and seems have side effect. I am still figure out what BOTCHA do with the user registration form. Before checking the code, if anyone has some experience related to this, I would really appreciate the help.

Hosais