Hi Daren, there has been a slight behavior change to this feature. Specifically, in the account’s Inbox, we prioritize the mail account’s address. However, in All Inboxes, the behavior should remain the same as before.
Can you try to see if the behavior is back to your preferred one in the All Iboxes folder? If not, please reach out to our support team.
If you have active VIP Support you can create a ticket in our Support center: https://support.emclient.com - just make sure to login with the email used for your license registration/purchase.