Options.add_argument("--window-size=1200,800") not working on Firefox

options.add_argument("--window-size=1200,800") not working on Firefox. Can you help me here?

Hey Miro,

Firefox doesn’t support firefoxOptions to set window size. Although post session is created they could set the window size to whatever they want.

driver.set_window_rect(0, 0, 800, 600) // in python