Maybe this is intentional? Either way, doesn't look bad.
I suppose that's subjective, because to me it looks distracting and tacky. I want the window chrome to be present, opinionated, yet consistent and plain. This is one of the many Tahoe-isms that violates the latter two. It's visual noise that detracts from one of the most basic utilities of the UI, which is to simply hold my applications in a regular, cohesive, predictable manner. Maybe it shouldn't irritate me, but i…
And then ... Apple lost its way. Now when I get a new Mac I spend the better part of a day turning off as much of the pointless eye candy as I can so that I can focus on the task I'm working on, not the distracting UX conventions.
I want a computer, not an iPad with a keyboard. That already exists, and there is a reason I don't have one.