A new hotfix for MIM 2016 has been released. A little interesting note is the support for Group Managed Service Accounts that is mentioned in the release notes. I'll have to dig further into that.
Anyway, you can grab it here - https://blogs.technet.microsoft.com/iamsupport/2018/07/16/support-release-mim2016-microsoft-identity-manager-2016-sp1-hotfix-4-5-26-0-released/
See you in the metaverse,