If there is no assignee in the last line, then the first user tag in the rest of the ticket text is the assignee and should be duplicated in the last line. Only if there is no user tag anywhere in the ticket text or in the last line, only in this case the default assignee set in the settings will be assigned as the assignee.
If there are user tags in the text and no tags in the last line, the first tag in the text means who the ticket is assigned to, and the rest is CC, and all of them are copied to the last line
An example of a ticket if you type this text: test #aa test
If there is no assignee in the last line, then the first user tag in the rest of the ticket text is the assignee and should be duplicated in the last line. Only if there is no user tag anywhere in the ticket text or in the last line, only in this case the default assignee set in the settings will be assigned as the assignee.
If there are user tags in the text and no tags in the last line, the first tag in the text means who the ticket is assigned to, and the rest is CC, and all of them are copied to the last line
An example of a ticket if you type this text: test #aa test
The ticket should be like this: _1. test #аа test
о #аа #п_