Does 8.1 Preview Disable Family Room Features?

[coip]

Six of my family members are waiting for Verizon to roll out Cyan, but one couldn't take it any more and finally went with the WP8.1 Developers' Preview. However, once he did so he lost the ability to comment on photos uploaded to Family Room. Is this a bug or has the ability to comment on photos in Family Room been removed? Should he roll back to WP8.0?