I have an application with a page to present all tasks assigned to a user group

I have an application with a page to present all tasks assigned to a user group (kind of customized task list). Through this page the manager can re-assign tasks.
The Re-assign Icon provides 3 options:
-          Automatically select all people who were initially assigned this task
-          Choose from people who were assigned this task before it was accepted
-          Choose from all users
When I selected the first option and pressed Next I was expecting the application back to my page and the task assigned to the initial user group. Instead it opened up a form as if the manager had selected the task, showing the message “You must accept this task before you can complete it”. If I close this form I can realize that the task was really re-assigned.
Is it how it should work or I am doing something wrong?
Btw, the second options works as I was expecting.
Thanks
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OriginalPostID-86569

OriginalPostID-86569