CRM 2015 Outlook Client - Replies to tracked emails not being tracked

Hey -

Currently on CRM 2015 on-prem, update 0.1. When I send an outgoing email through and click Track, the email is tracked successfully in CRM. However, when the contact replies, the email is not automatically tracked. The user has to manually click the Track button to get it into CRM.

Is there a way to solve this? It worked in CRM 2011.

Thank you.