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

La issue non indica file o test del repository. Per prima cosa riproduci il comportamento del formatter in VS Code usando l'impostazione fornita del formatter Eclipse, l'ordine degli import e gli import; il fix è completo quando la formattazione inserisce una riga vuota tra i gruppi java e org.