Video window is now too wide

I believe there I have updated Zoom in the last week or so. And now I can't shrink the width of my Zoom video windows below about 5 or 6 inches (on my MacBook Pro). 

This new feature is frustrating, as I now can't have my Zoom window open with a handful of meeting participants and see much of the rest of my screen. In the old settings, I used to be able to shrink the width of my Zoom window (and all its participants) to about 3 inches wide.

Is there a way revert to the old setting so I can shrink the width of the Zoom window more?