IDEA 2025.1 JBCefBrowser iframe Chinese Input Not Working in

IntelliJ Platform
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1 
@Slf4j
public class ChatWindow implements DumbAware, ToolWindowFactory {

@Override
    public void createToolWindowContent(@NotNull Project project, @NotNull ToolWindow toolWindow) {
 Content content = ContentFactory.getInstance()
                        .createContent(browser.getComponent(), "", false);
 ContentManager contentManager = toolWindow.getContentManager();
    contentManager.addContent(content);

@Slf4j
public class ChatBrowser extends JBCefBrowser implements Disposable {
public ChatBrowser(Project project) {
        super(createBuilder()
                .setEnableOpenDevToolsMenuItem(true)
                .setOffScreenRendering(false));

loadHTML(SIMPLE_INPUT_HTML);

public static String SIMPLE_INPUT_HTML = """
            <!DOCTYPE html>
            <html lang="en">
            <head>
              <meta charset="UTF-8" />
              <meta name="viewport" content="width=device-width, initial-scale=1.0" />
              <style>
                html,
                body,
                div,
                p,
                iframe {
                  background: transparent;
                  padding: 0;
                  margin: 0;
                  box-sizing: border-box;
                  overflow: hidden;
                }
                #message {
                  display: flex;
                  justify-content: center;
                  align-items: flex-start;
                  font-family: ui-sans-serif, system-ui;
                }
                #message div {
                  width: 100%;
                  max-width: 300px;
                  color: hsl(var(--foreground));
                }
                #message a {
                  color: hsl(var(--primary));
                }
                #message div {
                  margin: 16px;
                }
                #message div p {
                  margin: 8px 0;
                }
                iframe {
                  border-width: 0;
                  width: 100%;
                  height: 100vh;
                }
              </style>
            </head>
                <body>
                    <iframe id="chat" style="overflow: auto;"></iframe>
                    <script>
//                       // 在内层 iframe 里写一个输入框
//                        const innerDoc = document.getElementById("chat").contentWindow.document;
//                        innerDoc.open();
//                        innerDoc.write(`
//                          <!DOCTYPE html>
//                          <html lang="en">
//                          <head><meta charset="UTF-8"></head>
//                          <body>
//                            <input type="text" placeholder="请输入内容" style="width:90%;margin:10px;">
//                          </body>
//                          </html>
//                        `);
//                        innerDoc.close();
                      function getChatPanel() {
                        return document.getElementById("chat");
                      }

                      function loadChatPanel(url) {
                        const chat = getChatPanel();
                        chat.src = url;
                      }
                    </script>
            </body>
            </html>
            """;

String script = "loadChatPanel('https://www.baidu.com/')";
        executeJs(script);
public void executeJs(String script) {
        this.getCefBrowser().executeJavaScript(script, this.getCefBrowser().getURL(), 0);
    }



In Java plugin development, why can't this webpage embedded with iframe input Chinese? Moreover, it can't be input in idea2025.1 version and later, but it worked before. I hope to find a solution. Thank you