I don't understand why IntelliJ doesn't detect source code for some Kotlin classes. Let me show you an example:
Simple Spring WebFlux project. While debugging I wanted to go to each class, but when I tried to go into Mono.kt class, I saw
// IntelliJ API Decompiler stub source generated from a class file
// Implementation of methods is not available
Ok, maybe I didn't download the source code, but I see all sources
But IntelliJ shows me this:
