@cdbessig that's strange
Since S3 remote are only able to store blocks, the option is enforced on save ( without any uI)
I tested locally and the options seems to be there. Can you show me a screenshot of the backup job configuration ?
It's also explained very clearly here: https://xen-orchestra.com/docs/community.html (in the first point)
Always update to latest code available before reporting a problem
