Yeah this is an issue with my current company's use of Jira. They're super worried about tickets being "lost" so they all have to be assigned to one person, but then that means you can't tell who is actually working on something.

My previous company used Phabricator and you only assigned yourself a task when you actually started working on it. It meant anyone could work on anything - much more agile and much much better knowledge spreading and teamwork.

But I understand where my current company is coming from. You want a "person who is responsible for making sure this eventually gets done" field and a "person who is currently working on this" field.