Is auto-assignment to a component lead only a problem for manual entry from the new View screen?  I.e., does 'automatic' still work from the API?  We use an SFDC <> Jira connector that uses 'automatic' for assignee when a new bug is being filed from Salesforce.

Echoing the comments of Fernando Montemayor above:  We have hundreds of users in Support and Eng who rely on auto-assignment of Jiras based on their components.  The product components are generally easy to identify based on the nature of a functional defect, but designated triagers are not only far more numerous but they vary week-to-week as well.  To not support the auto-assignment feature is to create extra work and a large delay in new issues getting to the right engineer.  

Related:  What is the point of having a Default Assignee on the Components configuration page if the automatic assignment feature is not available?

This issue will further delay our ability to move to the new View screen, even after the Phabricator/ external links gap is resolved.  

Thanks for highlight this challenge in new view! Our team is looking at a range of improvement opportunities and and decided to investigate this after we started migrating people to new issue view starting March 31 2021. If this is a blocker for you to move to the new issue view, you can let us know by commenting on this page.

At our organization, we have a standard process for routing requests to other support teams through the use of components. A critical step in this process is changing the assignee to "Automatic" to trigger auto-assign to component leads. We heavily rely on this process in our company service desk, specifically with our applications support teams. I'm trying to get people get used to the change in issue view that was done recently but this is one of the reasons why they are reluctant to change at the moment. This is extremely important in the success of our service desk processes in our organization and it is leading to increased support times and tickets being lost in the dark.