Snapper needs a way how to set a proper selinux context on btrfs subvolumes originating in snapshot create command. Fs can't handle it on its own. We've briefly outlined the future fix for this problem in Fedora. The fix will involve manually setting/restoring types for .snapshots directory content from within the snapperd. Generally I need predefined source for types supposed to be set in .snapshots directory.
This bug appears to have been reported against 'rawhide' during the Fedora 24 development cycle. Changing version to '24'. More information and reason for this action is here: https://fedoraproject.org/wiki/Fedora_Program_Management/HouseKeeping/Fedora24#Rawhide_Rebase
*** Bug 1301329 has been marked as a duplicate of this bug. ***
Awaiting review from upstream: https://github.com/openSUSE/snapper/pull/239