Here is a list of issues that were fixed in this release - build 2.6.39.

Issue Key Description
AVSUPPORT-45462, AVSUPPORT-45531 For some customers the Periodic (weekly) Reports page did not complete loading, showing endless loading animation.
AVSUPPORT-44846 A customer was missing a few weekly reports. Internal database misconfiguration caused this issue, now solved.
AVSUPPORT-50661 The 'Quarantining all matching emails' in blocklist rule creation was not working - matching emails were not quarantined.
AVSUPPORT-49197 Links to a few emails were leading to an "unavailable" page, when presented in custom queries. Same emails were accessible via mail explorer.
AVSUPPORT-46789 Some Google Emails failed to quarantine, due to wrong parsing of email headers.
AVSUPPORT-44447 The "Show body from raw email" action did not present the email body for Gmail emails.
AVSUPPORT-49472 Mail Explorer did not find some emails based on subject copied from the email. The email subject contained special characters, and were not copied correctly to memory.
AVSUPPORT-48957 When searching in Mail Explorer, recipients "contains" condition returned no results for partial email address.