As an OCE player I used these items (from timewalking vendor in Caverns of Time) when my jar toy was on cooldown so I wasn’t always playing in permanent nightime. They weren’t on any kind of cooldown before, except as of at least TWW launch they now are. What gives Blizz? This is just another slap in the face to OCE players.
Edit: OK it seems to have gone back to no cooldown now. Bugged?