No main GUI in batch mode

[Aethyrion]

Hi, when I launch a game in batch mode (-b, from a launcher) the main GUI window is nowhere to be found, only the game window is available. How can I bring it back to access the menu?

Same issue when I enable "Render to main window" (with batch mode): the menu and tool bars are not displayed.

Thanks for your help.

Windows 10 x64
AMD 3600x
Nvidia GTX 1060