How to make Heroku see data from assets?

Question

Ruby on Rails

The library is connected from public/vendor via bower
config/application.rb

# Link to Bower
    config.assets.paths << Rails.root.join('vendor', 'assets', 'bower_components')

JS files in the dev environment work fine
But when I upload to Heroku
Heroku sees them. But for him these files are empty

• Added to assets/javascripts/application.js
  

  // Bower
  //= require pixi-editor

  
  
• Installed gem rails_12factor
  
• Tried to write a command

  RAILS_ENV=production rake assets:clean assets:precompile

  via bash heroku and git push heroku master
  
• Registered in config/application.rb

  config.assets.precompile += %w(*.png *.jpg *.jpeg *.gif)

  
  
• In config/environments/production.rb

  config.serve_static_files = ENV['RAILS_SERVE_STATIC_FILES'].present?

  
  

I went to heroku bash. The public folder with assets is full.
Why doesn't Heroku, which automatically runs rake assets:precompile with the rails_12factor gem, want to see the content?
UPD.
Removed turbolinks. JS in dev began to load from the first time, and not as before, from the second