Lombok: Nullable is not a repeatable annotation type in 1.18.4

[waypoint100]

1.18.4 introduced a bug in handling annotations present both in base class and builder,
for example this code:

@Builder(builderClassName = "Builder")
@Getter
public class Boo {
    @Nullable private final String foo;

    public static class Builder {
        @Nullable private String foo;
    }
}

causing this compilation error:

Boo.java:8: error: Nullable is not a repeatable annotation type
@Builder(builderClassName = "Builder")

Once you remove @Nullable from either base class or builder it compiles fine.
Bug is introduced in 1.18.4, in 1.18.2 everything works without issues

[AngryGami]

I woudn't say this is a bug... This happens because of #1634 and therefore you don't need to put annotation to builder field anymore - lombok will copy one from class field.

[waypoint100]

it breaks backward compatibility.
fix could be "don't apply non-repeatable (or the same) annotation if it's already there"