[response] tag doesn't work properly in multistep

[pwkip]

When adding a [response] tag in multistep forms, the beheviour is buggy. Only if the response if placed before the first step, it seems to work.

For example: this form gives no response message whatsoever

[step]
  [response]
  T1: [text* t1]
  [response]
[step]
  [response]
  T2: [text* t2]
  [response]
  [submit]

https://conditional-fields-cf7.bdwm.be/form-tester/?test-form=Github+issue+127+%281%29

This one works because the [response] is outside of the steps

[response]
[step]
  T1: [text* t1]
[step]
  T2: [text* t2]
  [submit]

https://conditional-fields-cf7.bdwm.be/form-tester/?test-form=Github+issue+127+%282%29