Acts as taggable on - enum methods not working in tags table

I am using acts-as-taggable-on gem. It creates tags and taggings tables automatically. But I wanted to add an additional column called status to tags table. I generated a migration to add status column.

I then created a file named tag.rb under app/models

class Tag < ApplicationRecord
  enum status: { public: 0, private: 1 }
end

Tag.first.private? works

but

ActsAsTaggableOn::Tag.first.private? is not working

Throws this error: NoMethodError (undefined method 'is_private?' for #<ActsAsTaggableOn::Tag:0x00007fb8414b4028>)

I even did

module ActsAsTaggableOn
  class Tag < ApplicationRecord
    enum status: { public: 0, private: 1 }
  end
end

Somehow, this too doesn't work. Can someone point out what's wrong.

Edit: This is the migration file

class AddStatusToTags < ActiveRecord::Migration[5.2]
  def change
    add_column :tags, :status, :integer, default: 0, null: false
  end
end

Use ::ActiveRecord::Base instead of ApplicationRecord

module ActsAsTaggableOn
  class Tag < ::ActiveRecord::Base
    enum status: { public: 0, private: 1 }
  end
end