Click on "Rebuild with SSH"
SSH to the circleci Instance with following command
ssh -p <ssh_port> <instance_ip> -L 5901:localhost:5900
5901 is your localhost port mapped to the 5900 port of CircleCI instance
Now Open VNC client and put below address
upon asking for password enter
secret as password.
and you will now be able to view the tests running in remote browser.