structuredAttrs is enabled

trying https://registry.npmjs.org/prosemirror-trailing-node/-/prosemirror-trailing-node-3.0.0.tgz
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
100   7903 100   7903   0      0 140.9k      0                              0