Asp.net Core 2 with IdentityServer4 - Redirect to Login after cookie expiration - asp.net-core

Question

I have an Asp.net Core 2.2 MVC application that authenticates using an IdentityServer4 server.
It is configured as you can see on the bottom, with really short times for quick testing.
The desired behavior is:
Login (suppose without the "remember me checked")
Do things...
Wait until the session expires
On the next navigation click redirect on the login page for a new interactive sign-in
I supposed I must work on cookies and session server side, but my first doubt is that I have to work more with id_token.
Anyway the current behavior is:
Login without the "remember me checked"
Wait until the session expires
Click on a dummy page and I see that the session is empty (as expected) -> The login is available on the top menu
So I click on login -> No login page showed -> a new session server side is available and in the browser there is a new value of ".AspNetCore.Cookies" but the same for ".AspNetCore.Identity.Application" and "idsrv.session".
If I logout, the cookie client side is correctly removed, so at the next login shows the expected credential form.
What I'm doing wrong?
Is it correct to try to get a new interactive sign-in checking the cookie expiration?
Do I have to follow another way working on the ids (id_token) objects?
CODE
public void ConfigureServices(IServiceCollection services)
{
services.AddSingleton<IConfiguration>(Configuration);
services.Configure<CookiePolicyOptions>(options =>
{
options.MinimumSameSitePolicy = SameSiteMode.None;
});
JwtSecurityTokenHandler.DefaultInboundClaimTypeMap.Clear();
services.AddAuthentication(options =>
{
options.DefaultScheme = "Cookies";
options.DefaultChallengeScheme = "oidc";
})
.AddCookie("Cookies", options =>
{
options.SlidingExpiration = true;
options.ExpireTimeSpan = TimeSpan.FromSeconds(30);
})
.AddOpenIdConnect("oidc", options =>
{
options.SignInScheme = "Cookies";
options.Authority = Configuration.GetValue<string>("IdentitySettings:Authority");
options.RequireHttpsMetadata = false;
options.ClientId = "mvc";
options.SaveTokens = true;
options.Events.OnTicketReceived = async (context) =>
{
context.Properties.ExpiresUtc = DateTime.UtcNow.AddSeconds(30);
};
});
services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
}
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
if (env.IsDevelopment() || env.IsStaging())
{
app.UseDeveloperExceptionPage();
}
else
{
app.UseExceptionHandler("/Error");
}
app.UseAuthentication();
app.UseStaticFiles();
app.UseCookiePolicy();
app.UseMvc(routes =>
{
routes.MapRoute(
name: "default",
template: "{controller=Home}/{action=Index}/{id?}");
});
}
EDIT
The logout is done as following
public async void OnPost()
{
await HttpContext.SignOutAsync("Cookies");
await HttpContext.SignOutAsync("oidc",
new AuthenticationProperties
{
RedirectUri = "http://localhost:5002"
});
}