Here is a list of issues that were fixed in this release - build 845.

Issue Key Description
AVSUPPORT-24371, AVSUPPORT-24307, AVSUPPORT-24171 Fixed Manual Actions menu in the Custom Queries screen. The menu did not load when clicked.
AVSUPPORT-23441 Fixed wrong mime-type processing , causing some files to skip security tools scanning.
The mime type checking mechanism favored the locally-determined mime-type (when engine processes file/attachment and derives its mime type) over the meta-mime (arriving from SaaS; i.e. Email part Content-Type header).
ASO-272, AVSUPPORT-18175 Fixed DLP false positives. Users outside the group were marked as external, effecting DLP policy and causing it to ignore email scanning for by the DLP engine.