In the macOS the all the four window corners are rounded, like the image below:
Here only two of the four corners of the window are rounded. I don't know if it is just me, but the windows rounded feel more comfortable to my eyes, like the screen corners are.
I've searched a bit and did not found any way to do or enable windows to be rendered like this. I saw that Mail app renders it's welcome screen with corners rounded.
There's any way to enable this? If no, what is the best approach to propose this to the design team?