Kopano Groupware Core 8.7.22 has been pushed to the repositories and the download server.
Version 8.7.21 was skipped due to failing builds.
8.7.22 contains a few fixes for backup, pyko, dagent, and gateway. Check the changelog for more details.
Please let us know if you find any issue(s)
We will release the final version next week, if no blocking issues are found.