Music Switch Controller is delaying the start by what sounds like 1 bar upon "play."

Question

I've been seeing a strange behavior with my music switch containers that I haven't encountered before (I have limited experience using them, but have never run into this problem before). Basically, when I play the switch controller with the base state selected, wwise seems to pause for approximately 1 bar and then starts it as usual. This delay doesn't occur at any other level of the hierarchy (playlist container, segment, track)--all of those start immediately.

I thought perhaps it was some transition issue, but when I delete/reset the transition properties I'm still getting that pesky delay.

All help much appreciated, and thanks.