Process after migration to 8.21 (Studio)

Hi;
I have a process with Open edit page element.
it's set as 


I change the status and run save() method.
It works properly
but when i run 
save (isSilent: true, callback: function() {method()})
in 7.17it works but after migration to 8.21
it save the record run callback function but do not move the process forward

Have you any idea what can goes wrong.

Regard

Tomek