Is it expected that in 8.7-rc-3, tests fail with

GradleRunner.withDebug(true)

? I have just prepared a minimal repro with:

val runner = GradleRunner.create()
    .withProjectDir(dir.toFile())
    .withGradleVersion("8.7-rc-3")
    .forwardOutput()
    .withPluginClasspath()
    .withDebug(true)

and

build.gradle.kts

containing:

plugins {
    id("my.plugin")
}

myExtension {
    say = "Oh!"
}

This fails miserably complaining:

Unresolved reference: say

Repo: https://github.com/hsz/gradle87rc3-withdebug