komponent rendering issue

_list_error.html.slim

.RENDERED_TWICE
  = @f.field_wrapper @field_name, class: "form-group" do
    = @f.text_field @field_name

_list_success.html.slim

.RENDERED_ONCE

custom_form_builder.rb

# frozen_string_literal: true

class CustomFormBuilder < ActionView::Helpers::FormBuilder
  FIELDS = %w[textarea input select].freeze

  delegate :capture, :safe_join, :raw, :content_tag, to: :@template

  def field_wrapper(attribute, options = {}, &block)
    content = capture(&block)
    classes = options.delete(:class) { "" }.split
    errors  = options.delete(:errors) { [] }
    errors  = @object.errors[attribute] if @object.present? && errors.empty?
    content = append_errors(content, errors) if errors.any?

    content_tag :div, class: classes.join(" "), **options do
      content
    end
  end

  private

  def append_errors(content, errors)
    elements = Nokogiri::HTML::DocumentFragment.parse(content)

    elements
      .children
      .select { |element| FIELDS.include? element.node_name }
      .select { |element| %w[checkbox radio hidden].exclude? element[:type] }
      .each   { |element| element[:class] = "is-invalid #{element[:class]}".strip }

    safe_join([elements.to_html.html_safe, *html_errors(errors)]) # rubocop:disable Rails/OutputSafety
  end

  def html_errors(errors)
    errors.map { |error| content_tag(:div, error, class: "invalid-feedback") }
  end
end

main.html.slim

= form_for(@model, options) do |f|
  // this component will be rendered twice, in a nested fashion
  = component "list_error", f: f, field_name: "foo"
  
  // this one will behave as expected
  = component "list_success", f: f, field_name: "bar"