SSO issue, applications on separate tab generate different Universal login

Hi , i just wanna ask how can i achieve this?

i have 2 applications. Application A and B.

i tried to open both applications on different tab. Both application redirected to universal login
with different state= value

when i login to universal login from App A, i want my App B on other tab will automatically login as well. take note the App B is currently on Universal Login page

seems like the sso will only work if i login to App A first before accessing the App B

thank you in advance.