Does anyone know how google/linkedin manage to block bots who are using SSO? Trying to login to a linkedin account using a google account from an automated bro

Does anyone know how google/linkedin manage to block bots who are using SSO? Trying to login to a linkedin account using a google account from an automated browser(like puppeteer+puppeteer-stealth or fakebrowser), will open a white empty window instead of the normal google login window, I could be a limitation of those libraries, but I doubt it, smells like something they detect, maybe looking into might lead some interesting insights on how to limit modern bots.