Data loss if both "Create new revision" and "Set Revision as default" options unchecked

When not creating a new revision is there any particular reason that the "Set Revision as default" option is still available? If a new revision is not being created then why would this option still be available? In my testing, unchecking the "Create new revision" option and then "Set Revision as default" results in the changes to fields not being saved! I recommend adding some logic to that field so it has no effect if "Create new revision" is disabled.