When atomicfu is applied to a project containing both Kotlin and Java sources, classes compiled from the Java sources are missing from the resulting Jar (or runtime classpath).

How to reproduce the issue:

./gradlew -PatomicFuVersion=0.23.1 clean run

With versions prior to 0.21.0 everything seems to work find:

./gradlew -PatomicFuVersion=0.20.2 clean run