There is no solution to this problem in this version. You can find the ini file of D9 in the document -mygames-SMC5-, and use Notepad to change the resolution options in it to make the best use of screen space. Specifically:

Set the selection window mode in the game,

Check the automatic adjustment on the menu item,

Then come out and change the resolution of the document surface to 1300X735.

The height is just right. The width is customized according to the position and requirements of the toolbar.