After first click, google-oauth screen does not show anymore?

This is very odd behavior. Everytime i get a new credentials, I click on the link, I get the consent screen but after that consent screen does not show anymore but request to google server and and response to callback url is happening behind the scene. I logout user "/auth/logout", I also delete all the cookies stored manually, When I clieck on the button, I am automatically signed in again.

I belive there is nothing wrong with coding and I checked the consent screen of console.developers but there is nothing related to this issue.

this is a typescript project. here is the routes

import passport from "passport";
import { Application, Request, Response } from "express";

export const authRoutes = (app: Application) => {
  app.get(
    "/auth/google",
    passport.authenticate("google", {
      scope: ["profile", "email"],
    })
  );

  app.get(
    "/auth/google/callback",
    passport.authenticate("google"),
    (req: Request, res: Response) => {
      res.redirect("/");
    }
  );

  // passport sees the code here and it knows that it has to use the code to get user
  app.get("/auth/current_user", (req: Request, res: Response) => {
    res.send(req.user);
  });
  app.get("/auth/logout", (req: Request, res: Response) => {
    req.logout();
    res.json({ user: req.user });
  });
};

here is the passport setting:

import GoogleStrategy from "passport-google-oauth20";
import passport from "passport";
import { User, UserDoc } from "../database/models/User";

// passport sets up the cookie and stuffs the user's database id not the googleId.
passport.serializeUser(
  (user: UserDoc, done: (err: any, user: UserDoc) => void) => {
    done(null, user.id);
  }
);

passport.deserializeUser(
  async (id: string, done: (err: any, user: UserDoc) => void) => {
    const user = await User.findById(id);
    if (user) {
      done(null, user);
    }
  }
);

passport.use(
  new GoogleStrategy.Strategy(
    {
      clientID: process.env.GOOGLE_CLIENT_ID!,
      clientSecret: process.env.GOOGLE_CLIENT_SECRET!,
      callbackURL: "http://localhost:4500/auth/google/callback",
      proxy: true,
    },
    async (accessToken, refreshToken, profile, done) => {
      const existingUser = await User.findOne({ googleId: profile.id });
      if (existingUser) {
        done(undefined, existingUser);
      }
      const user = await new User({ googleId: profile.id }).save();
      done(undefined, user);
    }
  )
);