Solutionunvalidated

The fallback '-' is only visible if the span containing the `flexRender` is empty. — In the end I used css to show a fallback. Outcome: .content:empty + .fallback { display: 'inline'; }.

3db3dc38-9797-46ff-988b-e12c69fd2dc7

The fallback '-' is only visible if the span containing the flexRender is empty. — In the end I used css to show a fallback. Outcome: .content:empty + .fallback { display: 'inline'; }.