[BUG] Compilation error when importing @Builder of enclosed class

[maherm]

Describe the bug

If there is an enclosed public static class that is annotated with @Builder, and the generated builder class is imported in the enclosing class, javac throws a compilation error. If the import statement is removed, compilation works again.

Please note, that the compile error only fails in line 10 - the first usage of @Builder in line 7 works. I only included the @Builder on Outer to show the difference - the build fails regardless of the presence of @Builder on Outer.

To Reproduce

package test;

import test.Outer.Inner.InnerBuilder; //Remove this line to fix the build

import lombok.Builder;

@Builder
public class Outer {
	
	@Builder
	public static class Inner {
	}
}

$ javac -cp lombok.jar Outer.java
Outer.java:10: error: cannot find symbol
       @Builder
        ^
 symbol:   class Builder
 location: class Outer
1 error

Expected behavior
No compilation error

Version info (please complete the following information):

• test with Lombok versions 1.16.18 and 1.18.8
• tested in javac 1.8.0_201
• compiling in Eclipse (Neon.3 4.6.3) works flawlessly

Additional context
Add any other context about the problem here.

[keith-furnell-igt]

The same issue (and work-around) occurs with other static inner class annotations too, e.g. @RequiredArgsConstructor @Getter - tested with javac 1.8.0_261 and Lombok versions 1.6.14, 1.6.22, 1.8.10, 1.18.32.