> Markdown version of [Limitations](https://vaadin.com/docs/v7/designer/designer-limitations). Section index: [llms.txt](https://vaadin.com/docs/v7/designer/llms.txt)

# <a id="designer.limitations"></a>Limitations

Limitations in Vaadin Designer:

- Custom client-side components are not supported when designing.

- Custom (project) components and nested designs are rendered as place-holders in Designer.

- Limited support for GridLayout: no column- or row-spanning.

- The declarative format does not support ClassResource or StreamResource for loading resources such as icons or images.