/usr/share/ubuntu-sso-client/qt/ is in ubuntu-sso-client-qt 3.0.0-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/ubuntu-sso-client/qt/current_user_sign_in.ui
/usr/share/ubuntu-sso-client/qt/email_verification.ui
/usr/share/ubuntu-sso-client/qt/error_message.ui
/usr/share/ubuntu-sso-client/qt/forgotten_password.ui
/usr/share/ubuntu-sso-client/qt/linux.qss
/usr/share/ubuntu-sso-client/qt/loadingoverlay.ui
/usr/share/ubuntu-sso-client/qt/network_detection.ui
/usr/share/ubuntu-sso-client/qt/proxy_credentials_dialog.ui
/usr/share/ubuntu-sso-client/qt/reset_password.ui
/usr/share/ubuntu-sso-client/qt/resources.qrc
/usr/share/ubuntu-sso-client/qt/setup_account.ui
/usr/share/ubuntu-sso-client/qt/ssl_dialog.ui
/usr/share/ubuntu-sso-client/qt/stylesheet.qss
/usr/share/ubuntu-sso-client/qt/success_message.ui
/usr/share/ubuntu-sso-client/qt/windows.qss