Weird minimize() behavior

[re-ovo]

I recently converted my project to a multi-module project, but I'm having trouble using shadowjar's minimize feature. Here is my project structure:

Root project 'shadow-jar-test'
+--- Project ':api'
\--- Project ':core'

This is a multi-module project, core depends on the api module, and both core and api have some third-party dependencies(For example Kotlin std library). And, I implemented these 2 modules in the root project's build script and want to package them into a jar.

The problem is, when I add minimize() to the shadowjar task, it reduces all my code, it seems that it thinks that the subproject is also a third-party dependency.

shadowJar {
    relocate 'kotlin', 'lib.kotlin'
    relocate 'org.jetbrains', 'lib.org.jetbrains'

    // minimize will remove the :core and :api module?
    minimize()
}

I also tried add exclude statement into minimize:

minimize {
        exclude(project(":core"))
        exclude(project(":api"))
}

This will indeed package core and api, but the third-party libraries that core and api depend on are still not packaged

Shadow Version

7.0.0

Gradle Version

7.1

Expected Behavior

Properly minimize dependencies

Actual Behavior

It also minimized my project code?!

Gradle Build Script(s)

I created a example project to reproduce it:
https://github.com/re-ovo/shadow-jar-test

This is the root project build script:
https://github.com/re-ovo/shadow-jar-test/blob/master/build.gradle