Just tried the camera and it works but there may be a order you used that caused it to break, which would be good to find
ok
1) Add object and set tag then add camera and set camera look at tag - this required me to click set as active camera then it worked.
2) Add camera and set tag then add object and set its tag - this required the camera set look at pressed again.
So there is a little bug in here that we need to look at , Thanks m8