message: Bug Fix sandboxed links in MarkdownView iframe
  Add `allow-popups-to-escape-sandbox` to MarkdownView iframe `sandbox` attribute so that links with
  `target="_blank"` don't inherit the sandbox restrictions.
diff: @@ -156,7 +156,7 @@ export class SyncMarkdownView extends React.Component<SyncMarkdownProps, State>
  return (
  <>
  <iframe
  - sandbox="allow-popups allow-same-origin"
  + sandbox="allow-popups allow-popups-to-escape-sandbox allow-same-origin"
  srcDoc={contents}
  style={{ border: '0px', display: 'block', width: '100%', height: '0' }}
  ref={(r) => (this.frame = r)}
  