Auto assign depending from issue type working strange

Ars

Hi, topic about assigning particular issue types for particular users.

I looked at article and tried to copy this:

1. Created special workflow for special issue type
2. Edit workflow create transition and added post function(update) that assignes issue type to particular user after creating
3. Published draft 
   
   Result is strange:

• User got email when he is assignee of issue type - cool
• But in the issue card assignee is unassigned
  
  

• Do you have ideas why it works like this? Thank you

This is my workflow and transition Create Issueimage2016-6-1 17:58:41.png

Here is my post function 

 

image2016-6-1 18:0:26.png

 

            When i create issue - it's unassigned but user get email notification that he is assignee!

image2016-6-1 17:57:45.png

image2016-6-1 17:57:45.png

image2016-6-1 17:58:41.png

image2016-6-1 18:0:26.png

image2016-6-1 18:43:44.png

unknown

Can you check the issue history?