Google has had expandable featured snippets officially for over a year now but Google seems to have recently been testing changing the design and layout of those. It is now showing less content in the expandable element. I should note - I personally cannot replicate this.
Here is a normal expandable featured snippet design:
Here is what Brian Freiesleben sees on Twitter and Heba Said sees on Twitter:
This is what it looks like when it is open:
Now, when I try to replicate this, I see the refinement bubbles, not the expandable interface.
I prefer the original look of the expandable featured snippets.
