(Stackoverflow)[https://stackoverflow.com/questions/44412233/how-to-set-window-size-and-position-in-visual-studio-code#answer-68764796]
One way I found to solve this was by using the Developer Tools Console:
Help -> Toggle Developer Tools -> Console Tab
Type:
window.resizeTo(1900, 1060);
Press Enter
Note: Tested on Windows 10, Ubuntu, OSX
Sidenote: Ubuntu had some strange behaviour bringing up the menu and developer tools. I had to open the developer tools while maximized, then undock the developer tools, then unmaximize the window, then type the command.