The Java debug pane is not expanding the keys in a HashMap

Bắt đầu với điểm vào mẫu Bug.main, dừng tại breakpoint được đánh dấu và kiểm tra m trong VARIABLES hoặc m.entrySet() trong WATCH bằng thiết lập Java và VS Code đã được báo cáo. Issue hoàn tất khi các node HashMap được mở rộng và tất cả các entry đều hiển thị ngay cả khi có một biến cục bộ kiểu Map.Entry.

Problem: HashMap nodes are unexpandable when a Map.Entry local variable exists (screenshot attached)

Sample code

package com.tech.maven;

import java.util.HashMap;
import java.util.Map;

public class Bug {
    public static void main(String[] args) {
        Map<String, String> m = new HashMap<>();
        m.put("employees", "500");
        m.put("department", "IT");

        // Put your breakpoint on the line below  ←←←←←
        System.out.println("breakpoint here");

        // After you stop here, look at "m" in VARIABLES or WATCH → m.entrySet()
        // You will see only one entry (or unexpandable nodes) if the bug is still present
    }
    
}

VScode & Extensions Environment

JavaSE 17 (Temurin)

Version: 1.106.3
Commit: bf9252a2fb45be6893dd8870c0bf37e2e1766d61
Date: 2025-11-25T22:28:18.024Z (3 days ago)
Electron: 37.7.0
ElectronBuildId: 12781156
Chromium: 138.0.7204.251
Node.js: 22.20.0
V8: 13.8.258.32-electron.0
OS: Darwin arm64 24.5.0

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