Compiling Kotlin files using CompilerManager fails

I am writing a plugin for IntelliJ IDEA and I need to compile a test file in a user project.
Among the CompilerManager and ProjectTaskManager compilation tools, I chose CompilerManager, as I need to get all the compilation error messages.

I am trying to trigger the compilation as follows:

CompilerManager.getInstance(project).compile(arrayOf(virtualFile), callback)

While there are no problems compiling Java, when compiling Kotlin, there are Unresolved reference problems that should not occur.

For example, for a test class of the following form:

package org.springframework.samples.petclinic.owner

class OwnerTest {
	val owner = Owner()
}

I get the error:

Kotlin: Unresolved reference: Owner

This error should not occur, since Owner is located in the package org.springframework.samples.petclinic.owner

Example project: spring-petclinic-kotlin

In addition to passing arrayOf(virtualFile) as a parameter to CompilerManager, I have tried passing different implementations of CompileScope, such as FileIndexCompileScope, OneProjectItemCompileScope, FileSetCompileScope, ModuleCompileScope.
I was able to achieve successful compilation only when using ModuleCompileScope, however, I would like to compile only one virtualFile, not an entire module.

Could you please suggest what solutions for this problem exist?