Can no longer cube locked items?

Excuse my ignorance if this was announced somewhere and I missed it. I'm posting in case this is a bug and not the intended functionality. Previously, even if an item was item locked, you could still cube it, but it appears that this has changed?

Is anyone else seeing this functionality when using bonus pot carved slot cubes? I'm actually pleased that you can no longer cube when locked, but it means I have to wait a bit for my items to unlock then before I can cube the bonus pots.