Sprockets patch for https://github.com/rails/sprockets/issues/242

assets-initializer.rb

# Remove when https://github.com/rails/sprockets/issues/242 is resolved
unless Rails.env.development?
  module SprocketsCachedLoader
    def initialize(*)
      super
      @expanded_assets_cache = {}
    end
    
    def asset_from_cache(key)
      return @expanded_assets_cache[key] if @expanded_assets_cache.key?(key)
      
      asset = cache.get(key, true)
      
      if asset
        asset[:uri]       = expand_from_root(asset[:uri])
        asset[:load_path] = expand_from_root(asset[:load_path])
        asset[:filename]  = expand_from_root(asset[:filename])
        asset[:metadata][:included]     = asset[:metadata][:included].map      { |uri| expand_from_root(uri) } if asset[:metadata][:included]
        asset[:metadata][:links]        = asset[:metadata][:links].map         { |uri| expand_from_root(uri) } if asset[:metadata][:links]
        asset[:metadata][:stubbed]      = asset[:metadata][:stubbed].map       { |uri| expand_from_root(uri) } if asset[:metadata][:stubbed]
        asset[:metadata][:required]     = asset[:metadata][:required].map      { |uri| expand_from_root(uri) } if asset[:metadata][:required]
        asset[:metadata][:dependencies] = asset[:metadata][:dependencies].map  { |uri| uri.start_with?("file-digest://") ? expand_from_root(uri) : uri } if asset[:metadata][:dependencies]

        asset[:metadata].each_key do |k|
          next unless k =~ /_dependencies\z/
          asset[:metadata][k] = asset[:metadata][k].map { |uri| expand_from_root(uri) }
        end
        asset
      end
      
      @expanded_assets_cache[key] = asset
    end
    
    Sprockets::CachedEnvironment.prepend self
  end
end

On line 10, I believe it is @expanded_assets_cache.has_key?(key)

@e3matheus thanks! updated 👍