Last Hurrah "Protect the Researchers" event not counting after 2 completions

I have completed two of these events for the last Hoorah quest and twice now I never got completion for it. I have met others while trying this that have also encountered this problem. Does anyone also know about this or has experienced this and possibly understand why? I took a break during season 2 and did not even come down here into the caverns till now.
I have no idea why it’s not counting, some help would be amazing!

it’s bugged. Same with the world boss.

Did it actually finish with the final boss fight? I didn’t have any issues with Researchers, but the world boss quest wouldn’t appear.

Just finsined it 10min ago, 12/12 tasks.

It worked for me. First time I’ve fully completed it. Maybe it requires a perfect result?

If you can’t see the WQ or progress in your objectives, you probably won’t get the credit.

Try relogging. I couldn’t see the world boss WQ on one of my characters but relogging helped to fix it.

just tried all that. Just did it a third time and it didn’t count. Somone said for me to try the opening quests with the cinematics that explain the opening of the caverns… we’ll see