Found a glass ball seal the bottle

Hi all, I was opening a new bottle of Beefeater and it was seal with a piece of plastic with glass marble inside, is this something they do now?

I googled but didn’t find anything about it, and i open the other bottle but it was normal without any seal in it.

The pieces shatter when i try to get it out, and it concerns me if there are any tiny pieces fall into the bottle and I accidentally sever it to the customer.