I was working in the pro channel for a track I had soloed and I noticed a few weird things in the fly-out EQ section - the spectrum analyzer display was not present and the changes I was making to the EQ I couldn't hear.  I went to other tracks and the spectral display was present and my EQ changes were audible.  Went back to the track I was originally working with and the fly-out EQ seemed to be working again - spectrum analyzer display was present and I could hear the EQ changes I was making.
 
I went in and disabled the 64 bit double precision engine just in case that was the culprit.  I'll have to see if the problem manifests itself again.  Anyone else seen this?  Thanks.