After successful authentication to the admin page, redirection to the always the same non-existing address "/admin/sprite-8cfe9c6c/" sometimes occurs instead of registered URL-path "/admin/" (wagtail admin).
/admin/sprite-8cfe9c6c/ is the empty (blank) page without Wagtail's admin page menus.
The Wagtail version is 5.0.2.
The Django version is 4.2.3.
Changing the Django version to 4.0.10 does not influence the issue.