Fix failing scenario related to Headless Chrome window-size flag

spec/features/admin/budgets_spec.rb

@@ -266,12 +266,10 @@ feature 'Admin budgets' do
         click_button 'Save heading'
       end
 
-      expect(page).not_to have_content 'This group has no assigned heading.'
-
       visit admin_budget_path(budget)
+
       within("#budget_group_#{group.id}") do
         expect(page).not_to have_content 'This group has no assigned heading.'
-
         expect(page).to have_content 'District 9 reconstruction'
         expect(page).to have_content '€6,785'
         expect(page).to have_content '100500'

spec/rails_helper.rb

@@ -32,7 +32,7 @@ end
 
 Capybara.register_driver :headless_chrome do |app|
   capabilities = Selenium::WebDriver::Remote::Capabilities.chrome(
-    chromeOptions: { args: %w(headless disable-gpu) }
+    chromeOptions: { args: %w(headless window-size=1200,600) }
   )
 
   Capybara::Selenium::Driver.new(