Domain next due date

[bear]

Moved to v9, we encountered an odd issue today.
We manually process domain renewals after invoices are paid. Overnight, an invoice was generated for a domain, and fully paid by credit. A few hours later, the domain sync cron ran and gave me this: domain.tld: Next Due Date updated to 06/29/2026 (domain obscured for this post). That was the original due date, and having just been paid a few hours earlier, this should have been updated to next year. This is how it had always worked before v9, and system date is accurate. 
I've since manually renewed (which incremented the expiry correctly), and will monitor the next domain sync(s) to see if that changes, but it's really odd in that a paid invoice should trigger the due date, not renewal status, no?

[bear]

Marked the task as done, and on the domainsync that followed it updated correctly. One would have thought paying the invoice would be the trigger for updating the next invoice due date. Strange.