Audio event only playing using Player in Editor (PIE), not standalone game?

I have a simple event w/ a single parameter that I’ve wired up into a function (see attached). It’s nested within a player character blueprint. This event plays like I would expect when I use the “Player in Editor” (PIE), but if I switch to play “Standalone Game” mode, I hear nothing. I don’t see anything weird in the logs, and I verified that this function is called end to end in both cases. Any suggestions? Not sure where to start.

I’ve also tried this simplification:

There is an event assigned to the “Headlamp Clicker” which is the FMODAudio Component, and that event is assigned properly to the master bank. this is UE 4.25.

Bug resolved by upgrading to UE 4 integration version 2.01.07.