I have created new content type Cars. At the bottom of the form there are two buttons Save button and Cancel button. If i click cancel button it show me messages for required fileds, but doesn't close the form. But when I edit an article, the same cancel button works. Who had the same problem before Joomla 3.4.1 Seblod 3.6.0
and you will have a nice good working cancel button in case you have Bootstrap 3, redirecting to an empty form on the same page. For Bootstrap 2, the Joomla standard, I think you have to adapt the class and role.
The button bar in SEBLOD on admin side is managed automatically (such as in Joomla). Are you on last version for Joomla and SEBLOD? Are you speaking about this default button bar managed by SEBLOD? Have you any other extensions which execute a specific process on admin side?