Chitchat is not working during form custom slot mapping

chitchat works fine during pre-defined slot mapping, but it fails during custom slot mapping, This is the rule I use for my form

- rule:  Room Booking form when other no other forms are active
  condition:
  - active_loop : null
  steps:
  - intent: room_booking
  - action: hotel_booking_form
  - active_loop: hotel_booking_form

- rule: Deactivate Room Booking Form
  condition:
  - active_loop: hotel_booking_form
  steps:
  - action: hotel_booking_form
  - active_loop: null
  -  slot_was_set:
       - requested_slot: null
  - action: action_clear_data

Likewise i have two rules for other two forms. The rule for chitchat is as follows

- rule: respond to FAQs
  steps:
  - intent: faq
  - action: utter_faq
- rule: respond to chitchat
  steps:
  - intent: chitchat
  - action: utter_chitchat

should I have to write chitchat rules for each and every form, separately?

@fkoerner