When launching Blender via blender-launcher.exe, the window briefly displays incorrectly on startup when using the Vulkan backend. This is caused by not properly handling the GHOST_kWindowStateFullScreen case. Previously, even if the window state was set to fullscreen, nCmdShow would default to SW_SHOWNORMAL or SW_SHOWNOACTIVATE. With this fix, nCmdShow is explicitly set to SW_SHOWMAXIMIZED when the window is in fullscreen state, preventing the flicker. Pull Request: https://projects.blender.org/blender/blender/pulls/141518