I'm using SeleniumBase in headless mode with xvfb support: with SB(uc=True, headless=True, xvfb=True) as sb: ... I have no Chrome window but sometimes I can see Download complete messages. What I've tried: with SB(uc=True, headless=True, xvfb=True, chromium_arg='--disable-notifications', disabled_features='DownloadBubble,DownloadBubbleV2') as sb: ... But it didn't change anything. After that I've found that Chrome has param download_bubble .partial_view_enabled which seems to be what I need: // A boolean specifying whether the partial download bubble (which shows up // automatically when downloads are complete) should be enabled. True (partial // bubble will show automatically) by default. How can I disable it in SeleniumBase? Continue reading...