macOS Big Sur Messages Window

Hi,

I'm surprised that the Messages App window takes up so much space on the monitor. Is it possible to adjust the minimum size in the same way as under macOS Catalina? Is there a hack or will Apple itself realize that the app is simply too big? In my opinion, it is simply much too wide.
Seems fixed in beta 7! :)
macOS Big Sur Messages Window
 
 
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