I'm doing some testing with a 9800 IOS-XE based WLC and observed the same behavior.   In my particular case I was able to achieve my desired result by moving everything into the redirect ACL, however, I'd like to understand if this is expected behavi...

What was the setting on the WLC that resovled the original issue?

I did see that post, but it seemed to contradict what I was told by TAC.