Summary

When adding a rich text gadget to a dashboard and set a wallboard slideshow, the slideshow doesn't load.

Steps to reproduce

1. Add the Rich Text Gadget app to the instance;
2. Create a dashboard and add the Rich Text gadget to it;
3. Set up a wallboard slide show and click to view the wallboard slideshow.

Expected results

The dashboard is shown in the slideshow.

Actual result

The page keeps loading and never show the information.

Workaround

Remove the Rich Text gadget from the dashboard.