^ It's probably a bug, you should report that so they hopefully fix it in a future maintenance update.
Also looks like they're finally rerunning events in CN. They're rerunning the summer event, Heart of Surging Flame, but it looks like it's only going to be a lightweight version of the actual event. From what I can tell based off the event details + dev updates, they're going to be doing all reruns in a similar way.

What they're doing in this rerun:
1. If you already cleared these stages before, you won't gain any originite upon completion again. That's only available to people who haven't cleared the event before.
2. The infinite lotto is gone.
3. They're adding a special store for people who've already cleared the event that they can exchange event currency for.
4. They're rerunning all skins that were available during the first event in this + adding new ones.
5. They're treating this event as a warm-up event for the new events coming out after.
6. They added new operators and skins in this specific rerun.
7. After backlash, the devs said they will not be adding new operators in the future reruns.
So to summarize, all future reruns will be treated as warm-ups between major events and have decreased rewards from the first time that event ran. The main goal is to let new players get the "main rewards" that they missed out on like getting the event operator and event skins etc.
Personally I really like how they're doing the rerun because it gives new players a chance for the major event rewards they missed while not forcing old players to refarm. This also won't affect events like Grani's event where the actual farming is through map drops so it won't piss anyone off who was looking forward to the amazing drop rates for loxic kohl and grindstones. Kinda wish they didn't add new skins though since you can't get originite from reclearing the event so you'll need to buy premium currency to get them. Not very f2p friendly but... I'm not too mad about it since skins are just cosmetic items in the first place.