CAS 5.3.3 /cas does not redirect to /cas/login

[Yan Zhou]

Hello,

With previous CAS4.x and 5.2.x,  go to /cas will redirect to /cas/login automatically.  That is quite nice. 

But, with 5.3.3, this is no longer happening, it comes up with an "Access Denied" page and provides a link to /cas/login. 

How do I configure the auto-redirect?

Thx!

Yan