[BUG] Inner class not made static by @UtilityClass

[TysonMN]

Describe the bug
The documentation of @UtilityClass says it makes all inner classes static, but that doesn't seem to be the case.

Steps to Reproduce
Compile this code:

import lombok.experimental.UtilityClass;

@UtilityClass
public class MyOuterClass {
    public void method() {
        new MyInnerClass().method();
    }

    private class MyInnerClass {
        public void method() { }
    }
}

Expected behavior
The code compiles.

Actual behavior
The code does not compile. Instead, I get this compile error:

MyOuterClass.java:8: error: non-static variable this cannot be referenced from a static context
new MyInnerClass().method();
^

Workaround
The code compiles after explicitly adding static to the inner class as shown in the following code:

import lombok.experimental.UtilityClass;

@UtilityClass
public class MyOuterClass {
    public void method() {
        new MyInnerClass().method();
    }

    private static class MyInnerClass {
        public void method() { }
    }
}

Additional context
Here is a screenshot showing where the documentation of @UtilityClass says

All methods, inner classes, and fields in the class are marked static.

Version info

• Lombok version: Not sure. IntelliJ bundles Lombok and says version it is using is bundled 213.7172.25.

• javac version: 11.0.12
• Platform: I am using IntelliJ. Here is the info obtained from IntelliJ IDEA -> About IntelliJ IDEA -> Copy:

IntelliJ IDEA 2021.3.3 (Community Edition)
Build #IC-213.7172.25, built on March 15, 2022
Runtime version: 11.0.14.1+1-b1751.46 x86_64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
macOS 12.3.1
GC: G1 Young Generation, G1 Old Generation
Memory: 2048M
Cores: 16
Registry:
debugger.watches.in.variables=false

Non-Bundled Plugins:
org.antlr.intellij.plugin (1.17)
idea.plugin.protoeditor (213.6461.28)
org.jetbrains.kotlin (213-1.6.10-release-961-IJ6777.52)
PythonCore (213.7172.26)
CheckStyle-IDEA (5.62.0)
org.intellij.scala (2021.3.20)

Kotlin: 213-1.6.10-release-961-IJ6777.52

[rzwitserloot]

This sounds familiar, as in, already fixed. However, its possible the lombok plugin didn't. It is a separate codebase; the issue should probably be filed on their tracker. It's here.

[TysonMN]

This sounds familiar, as in, already fixed.

Ah, yes. This issue is a duplicate of #3097.

However, its possible the lombok plugin didn't. It is a separate codebase; the issue should probably be filed on their tracker. It's here.

Thanks for the pointer. I will follow up there.