Transient failure for `spec/features/projects/snippets/user_comments_on_snippet_spec.rb:38` | Projects > Snippets > User comments on a snippet has zen mode

Job #457137387 failed for 8d8e2173:

 Failures:
   1) Projects > Snippets > User comments on a snippet has zen mode
      Got 1 failure and 1 other error:
      1.1) Failure/Error: expect(page).to have_selector('.fullscreen')
             expected to find css ".fullscreen" but there were no matches
           # ./vendor/ruby/2.6.0/gems/rspec-support-3.9.2/lib/rspec/support.rb:97:in `block in <module:Support>'
           # ./vendor/ruby/2.6.0/gems/rspec-support-3.9.2/lib/rspec/support.rb:106:in `notify_failure'
           # ./vendor/ruby/2.6.0/gems/rspec-expectations-3.9.0/lib/rspec/expectations/fail_with.rb:35:in `fail_with'
           # ./vendor/ruby/2.6.0/gems/rspec-expectations-3.9.0/lib/rspec/expectations/handler.rb:40:in `handle_failure'
           # ./vendor/ruby/2.6.0/gems/rspec-expectations-3.9.0/lib/rspec/expectations/handler.rb:50:in `block in handle_matcher'
           # ./vendor/ruby/2.6.0/gems/rspec-expectations-3.9.0/lib/rspec/expectations/handler.rb:27:in `with_matcher'
           # ./vendor/ruby/2.6.0/gems/rspec-expectations-3.9.0/lib/rspec/expectations/handler.rb:48:in `handle_matcher'
           # ./vendor/ruby/2.6.0/gems/rspec-expectations-3.9.0/lib/rspec/expectations/expectation_target.rb:65:in `to'
           # ./spec/features/projects/snippets/user_comments_on_snippet_spec.rb:38:in `block (2 levels) in <top (required)