A couple of comments:

1. The issue does not occur if you use your mobile. It only occurs on desktop.
2. I've been exchanging messages with Meta Support and 5 hours ago they notified that they've now been able to identify the root cause and they're working on a fix.

This is the exact message I received:

We're now able to reproduce this issue on our side and we're now investigating this issue. Will keep you updated. In the meanwhile, please refer to our status page: https://metastatus.com/whatsapp-business-api

I'll update you guys as soon as I have more news.

Thanks!

We are facing the same problem.

Same problem here

its been like that for days now, such level of sloppiness and incompetency is totally unacceptable from meta money are lost due to this

It's fully resolved now, guys. Feel free to close this ticket.

Having same issue did u find any solution to this

We're also experiencing the same issue.