Here is a list of issues that were fixed in this release - build 2.6.25.

Issue Key Description
AVSUPPORT-39424 Fixed issues with manually IP exclusion - the Oubound DLP were not taking these into considerations. The issues related to edits of the O365 Outgoing Protect mail flow rule, the system did not consider the defined IP in the exclusion.
AVSUPPORT-38836 A customer tried to update a protect policy to all users and groups, and experienced an internal server error.
AVSUPPORT-37462 Users under "Excluded users" were not being excluded when policy scope was set to "All users and groups". The exclusions are now invalid when 'All users' is selected.