rails 5 でユーザー登録画面だけスマホ画面だけ表示されなくなるエラーの対処法

rails 5にてスマホ画面に対応したrailsアプリ（デプロイ先はheroku）を作っているのですがスマホ画面でユーザー登録画面（app/views/devise/registrations/new.html.erb）だけ表示されなくなると言うエラー。何度もリロードしてしまい表示できない。PCだと問題なく動く。
https://youtu.be/IyEtsPCMe0A リンク内容

app/views/devise/registrations/new.html.erb

<h2>Sign up</h2>

<%= form_for(resource, as: resource_name, url: registration_path(resource_name)) do |f| %>
  <%= render "devise/shared/error_messages", resource: resource %>

  <div class="field">
      <%= f.label :nickname %> <br />
      <%= f.text_field :nickname, autofocus: true %>
    </div>
    
  <div class="field">
    <%= f.label :email %><br />
    <%= f.email_field :email, autofocus: true, autocomplete: "email" %>
  </div>

  <div class="field">
    <%= f.label :password %>
    <% if @minimum_password_length %>
    <em>(<%= @minimum_password_length %> characters minimum)</em>
    <% end %><br />
    <%= f.password_field :password, autocomplete: "new-password" %>
  </div>

  <div class="field">
    <%= f.label :password_confirmation %><br />
    <%= f.password_field :password_confirmation, autocomplete: "new-password" %>
  </div>

  <div class="actions">
    <%= f.submit "Sign up" %>
  </div>
<% end %>

<%= render "devise/shared/links" %>

いろいろ試しに試した結果、nickname とmail の入力欄が原因だと掴んだ。このコードでも同様のことが起きており、それ以外の入力欄余分なデザインは全て削除して、消去法で原因を掴んだが全てリロードはせずこのコードだけ同じ状態が発生したので間違いない。

<h2>Sign up</h2>

<%= form_for(resource, as: resource_name, url: registration_path(resource_name)) do |f| %>

    <%= f.text_field :nickname, autofocus: true %>

    <%= f.email_field :email, autofocus: true, autocomplete: "email" %>

  <div class="actions">
    <%= f.submit "Sign up" %>
  </div>
<% end %>

<%= render "devise/shared/links" %>

念のためapplication.html.erbとgemファイルも載せておく

　application.html.erb

<!DOCTYPE html>
<html>
  <head>
    <title>talkle</title>
    <%= csrf_meta_tags %>
    <%= csp_meta_tag %>

    <%= stylesheet_link_tag    'application', media: 'all', 'data-turbolinks-track': 'reload' %>
    <%= javascript_include_tag 'application', 'data-turbolinks-track': 'reload' %>
    <link rel=”icon” type=”image/png” href=“/image/t-logo.png”>
  </head>
  <header class = header>
<h1><%=link_to "talkle",root_path,method: :get%></h1>
<%= form_tag(search_tweets_path,:method => 'get') do %>
  <%= text_field_tag :search %>
  <%= submit_tag 'Search', :name => nil %>
<% end %>
<% if user_signed_in? %>  
          <div class="btn btn--orange btn--radius">
             <%= link_to "マイページ", user_path(current_user) %>
            <%= link_to "ログアウト", destroy_user_session_path, method: :delete %>
            <%= link_to "投稿する", "/tweets/new", class: "post" %>
          </div>
        <% else %>
          <div class="btn btn--orange btn--radius">
            <%= link_to "ログイン", new_user_session_path, class: "post" %>
            <%= link_to "新規登録", new_user_registration_path, class: "post" %>
          </div>
        <% end %>
</header>

  <body class=view>
  <div class = space></div>
    <%= yield %>
  </body>
</html>

source
1git_source(:github) { |repo| "https://github.com/#{repo}.git" }
2
3ruby '2.6.3'
4
5# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
6gem 'rails', '~> 5.2.1'
7# Use sqlite3 as the database for Active Record
8
9# Use Puma as the app server
10gem 'puma', '~> 3.11'
11# Use SCSS for stylesheets
12gem 'sass-rails', '~> 5.0'
13# Use Uglifier as compressor for JavaScript assets
14gem 'uglifier', '>= 1.3.0'
15# See https://github.com/rails/execjs#readme for more supported runtimes
16# gem 'mini_racer', platforms: :ruby
17
18# Use CoffeeScript for .coffee assets and views
19gem 'coffee-rails', '~> 4.2'
20# Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
21gem 'turbolinks', '~> 5'
22# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
23gem 'jbuilder', '~> 2.5'
24# Use Redis adapter to run Action Cable in production
25# gem 'redis', '~> 4.0'
26# Use ActiveModel has_secure_password
27# gem 'bcrypt', '~> 3.1.7'
28
29# Use ActiveStorage variant
30# gem 'mini_magick', '~> 4.8'
31
32# Use Capistrano for deployment
33# gem 'capistrano-rails', group: :development
34
35# Reduces boot times through caching; required in config/boot.rb
36gem 'bootsnap', '>= 1.1.0', require: false
37
38group :development, :test do
39  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
40  gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
41  gem 'sqlite3'
42end
43
44group :development do
45  # Access an interactive console on exception pages or by calling 'console' anywhere in the code.
46  gem 'web-console', '>= 3.3.0'
47  gem 'listen', '>= 3.0.5', '< 3.2'
48  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
49  gem 'spring'
50  gem 'spring-watcher-listen', '~> 2.0.0'
51end
52
53group :test do
54  # Adds support for Capybara system testing and selenium driver
55  gem 'capybara', '>= 2.15'
56  gem 'selenium-webdriver'
57  # Easy installation and use of chromedriver to run system tests with Chrome
58  gem 'chromedriver-helper'
59end
60
61group :production do
62  gem 'pg' , '~>0.18.4'
63end
64
65# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
66gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
67
68gem 'compass-rails', '3.1.0'
69gem 'sprockets', '3.7.2'
70gem 'hirb'
71gem 'hirb-unicode'
72gem 'devise'
73gem 'kaminari'
74group :production do
75  gem 'rails_12factor'
76end
77
78コード