message: Disable any indent guide feature in the TerminalAceViewer. It messes up the display.
diff: @@ -185,6 +185,7 @@ export class TerminalViewer extends ViewerElement implements Commandable, keybin
  const aceRenderer = new TerminalRenderer(containerDiv);
  aceRenderer.setShowGutter(false);
  aceRenderer.setShowLineNumbers(false);
  + aceRenderer.setDisplayIndentGuides(false);
  aceRenderer.setPadding(0);
  this._aceEditor = new TerminalAceEditor(aceRenderer, this._aceEditSession);
  