😞 FWIW I just tested this in a project I have handy and it did work for me.

michaelsims: No way! So it seems there is something else wrong in our project… Let me see if I can figure out a truly minimal example project.

I'm using Kotlin 1.1.2, Gradle 3.3, Android gradle plugin 2.3.1, build tools 25.0.2 if any of that matters

Thanks for your help. I can confirm that the problem goes away when I start a fresh new project with just three classes, so I’m slowly adding stuff until I can figure out what the real problem is.