diff --git a/db/migrate/20260218122039_readd_default_to_work_packages_subject.rb b/db/migrate/20260218122039_readd_default_to_work_packages_subject.rb
new file mode 100644
index 00000000000..03e752bf6dc
--- /dev/null
+++ b/db/migrate/20260218122039_readd_default_to_work_packages_subject.rb
@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+#-- copyright
+# OpenProject is an open source project management software.
+# Copyright (C) the OpenProject GmbH
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License version 3.
+#
+# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
+# Copyright (C) 2006-2013 Jean-Philippe Lang
+# Copyright (C) 2010-2013 the ChiliProject Team
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+# See COPYRIGHT and LICENSE files for more details.
+#++
+
+class ReaddDefaultToWorkPackagesSubject < ActiveRecord::Migration[8.1]
+  def change
+    change_column_default :work_packages, :subject, from: nil, to: ""
+  end
+end
diff --git a/spec/features/work_packages/new/automatic_subject_spec.rb b/spec/features/work_packages/new/automatic_subject_spec.rb
new file mode 100644
index 00000000000..0684fc745cd
--- /dev/null
+++ b/spec/features/work_packages/new/automatic_subject_spec.rb
@@ -0,0 +1,58 @@
+# frozen_string_literal: true
+
+# -- copyright
+# OpenProject is an open source project management software.
+# Copyright (C) the OpenProject GmbH
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License version 3.
+#
+# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
+# Copyright (C) 2006-2013 Jean-Philippe Lang
+# Copyright (C) 2010-2013 the ChiliProject Team
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+# See COPYRIGHT and LICENSE files for more details.
+# ++
+
+require "spec_helper"
+
+RSpec.describe "new work package with automatic subject type", :js, :selenium do
+  let!(:type) { create(:type, :with_subject_pattern) }
+  let!(:status) { create(:status, is_default: true) }
+  let!(:priority) { create(:priority, is_default: true) }
+  let!(:project) do
+    create(:project, types: [type], no_types: true)
+  end
+
+  let(:subject_field) { wp_page.edit_field :subject }
+  let(:wp_page) { Pages::FullWorkPackageCreate.new(project:) }
+
+  current_user { create(:user, member_with_permissions: { project => %i[view_work_packages add_work_packages] }) }
+
+  it "automatically fills the subject field with the pattern on creation" do
+    wp_page.visit!
+    subject_field.expect_state_text "Automatically generated through type #{type.name}"
+
+    wp_page.save!
+
+    wp_page.expect_toast message: "Successful creation."
+
+    work_package = WorkPackage.last
+
+    subject_field.expect_display_value "#{current_user.name} - #{status.name}/#{type.name} - #{work_package.id}"
+  end
+end