expect optimization: display size of window title border

[jianwei1216]

expect buddy window border size more small when not full screen

I often use Buddy VM under front-end scheduling instead of full screen mode,
My laptop is 14 inches, and the size of the buddy window border takes up more display area

[jianwei1216]

@insidegui Can you help me, thank you very much

[insidegui]

I have improvements planned in this area, but it will take a while. Thank you for bringing this up