Hello @chrhenry,
Thanks for your message. There is an example project of mixing kotlin and java files here (Unfortunately in Maven only, will add for Gradle soon)
There could be a problem if your kotlin files are not located in the directories structure corresponding to package names (java style, which is recommended in Java-Kotlin mixed projects) If your Kotlin files are not located in this directory Jacoco will not be able to find the source file and wont map coverage result to it. So SQ won’t show it. This issue doesn’t affect coverage report of Jacoco because Jacoco is using bytecode for its calculations. But you can probably notice some warnings that source files weren’t located.
Regards,
Margarita