startup：

services.AddAuthentication(CookieAuthenticationDefaults.AuthenticationScheme)
.AddCookie(options =>
{
options.LoginPath = new PathString("/Account/Login");
options.AccessDeniedPath = new PathString("/Account/AccessDenied");
options.Events = new CookieAuthenticationEvents
{
OnValidatePrincipal = XT_BSP.SSO.Main.Event.LastChangedValidator.ValidateAsync
};
});

登陆：

HttpContext.SignInAsync(CookieAuthenticationDefaults.AuthenticationScheme, new ClaimsPrincipal(identity));

用fiddler抓包发现，用猎豹浏览器登陆时，会返回cookie，但是页面跳转请求时候的cookie会丢失。别的浏览器正常，IE11也是正常的。就tmd这货不走寻常路