blank lines between import groups is ignored

With a format settings file containing

<setting id="org.eclipse.jdt.core.formatter.blank_lines_between_import_groups" value="1"/>

and java.completion.importOrder specifying groups, all imports are still not spaced.

"java.completion.importOrder": [
        "java",
        "javax",
        "org",
        "com",
        "",
        "#"
    ]

Environment

• Operating System: Linux
• JDK version:
• Visual Studio Code version: 1.76
• Java extension version: 1.15.0

Steps To Reproduce

With

import java.time.Duration;
import java.util.HashSet;
import java.util.Optional;
import java.util.Set;
import java.util.function.Consumer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

2. Format document do not add or remove blank lines

Current Result

import java.time.Duration;
import java.util.HashSet;
import java.util.Optional;
import java.util.Set;
import java.util.function.Consumer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

Expected Result

import java.time.Duration;
import java.util.HashSet;
import java.util.Optional;
import java.util.Set;
import java.util.function.Consumer;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

Additional Informations

El issue no menciona archivos ni pruebas del repositorio. Primero reproduce el comportamiento del formateador en VS Code usando la configuración proporcionada del formateador de Eclipse, el orden de los imports y los imports; el fix está completo cuando el formateo inserta una línea en blanco entre los grupos java y org.