After copying and pasting, pressing any key will repeat the previous content and leave a blank space in front.

[JackyXU96]

After copying and pasting, pressing any key will repeat the previous content and leave a blank space in front. If you press the delete key, you can only delete the duplicate copied content.
I am a beginner at xterm.js and I hope someone can help me,thank you.

function createTerminal(path) {
  // vscode-snazzy https://github.com/Tyriar/vscode-snazzy
  // copied from xterm.js website
  var baseTheme = {
    foreground: '#eff0eb',
    background: '#000000',
    selectionBackground:'#4D4D4D',
    black: '#282a36',
    brightBlack: '#686868',
    red: '#ff5c57',
    brightRed: '#ff5c57',
    green: '#5af78e',
    brightGreen: '#5af78e',
    yellow: '#f3f99d',
    brightYellow: '#f3f99d',
    blue: '#EFF0EB',
    brightBlue: '#EFF0EB',
    magenta: '#ff6ac1',
    brightMagenta: '#ff6ac1',
    cyan: '#9aedfe',
    brightCyan: '#9aedfe',
    white: '#f1f1f0',
    brightWhite: '#eff0eb'
  };

  const term = new Terminal({
    theme: baseTheme,
    fontSize:14,
    lineHeight:1,
    convertEol: true,
    fontSmoothing:'subpixel-antialiased',
    rendererType:'dom',
    cursorBlink: true,
  });

  term.open(document.getElementById('terminal_view'));

  const weblinksAddon = new WebLinksAddon.WebLinksAddon();
  term.loadAddon(weblinksAddon);
  term.resize(200,43)
  // fit the xterm viewpoint to parent element
  const fitAddon = new FitAddon.FitAddon();
  term.loadAddon(fitAddon);
  fitAddon.fit();
 

  term.onKey(e => {
    let ev = e.domEvent;
    if (ev.key === 'Backspace') {
        if (term.buffer.active.cursorX === 0 && term.buffer.active.cursorY > 0) {
          term.write('\x1b[A'); // Move up one line
          let prevLine = term.buffer.active.getLine(term.buffer.active.cursorY-1).translateToString();
          console.log(prevLine)
          let prevLineLength = prevLine.length;
          term.write(`\x1b[${prevLineLength}C`);
          }
    } 
});


window.addEventListener('resize', () => {
    fitAddon.fit();
});

fitAddon.fit();
  // create the websocket and connect to the server
  let ws_uri = "wss://" + window.location.host + path;
  let socket = new WebSocket(ws_uri);
  socket.binaryType = "arraybuffer";
  let attachAddon = new AttachAddon.AttachAddon(socket);
  term.loadAddon(attachAddon);

  return term;
}

[JackyXU96]

I only copied helloqweqweqwe once But after copying and pasting, the copied content will be highlighted, and after pressing any key, helloqweqweqwe will be copied again。