Steps to reproduce:
- Start Liferay and deploy Fjord theme lpkg
- Restart Liferay
- Create Site based on Fjord Site template
- Go to Home page
- Click the eye icon to enter "Edit" mode
- Select or add an "Actions fragment" from the "Fjord sections" of the sidebar
- Click on top section of the background image (on the mountain)
- Click "Select Background"
- Select/upload an image from your Documents and click "Add"
- Save the page with the button "Publish Page"
Actual result: the background is now blank/white
Expected: the background should be the new image