Issue recurring

Hi,
I have a problem with setting up recurrent tasks. Can you please help me with that?

New tasks are created by a cron job as expected, but recurrences do not inherit the assignee - thus the assignee does not receive a notification.

My environment:
Redmine version 5.0.4.stable
Ruby version 2.5.5-p157 (2019-03-15) [x86_64-linux-gnu]
Rails version 6.1.7
Environment production

Plugin version: 1.7

My settings: You can find screenshots in the attached file

Thank you a lot in advance for your help
Milos