mastodon/lib/paperclip/transcoder_extensions.rb

# frozen_string_literal: true

module Paperclip
  module TranscoderExtensions
    # Prevent the transcoder from modifying our meta hash
    def initialize(file, options = {}, attachment = nil)
      meta_value = attachment&.instance_read(:meta)
      super
      attachment&.instance_write(:meta, meta_value)
    end
  end
end

Paperclip::Transcoder.prepend(Paperclip::TranscoderExtensions)