Cell background colors do not come after exporting to PDF

Problem

Table with its cells colored, included in page ; when SPACE PDF export is taken we don't see background colors of the cells in the PDF generated.

Environment

.Confluence 7.12.3, 7.12.4

Steps to Reproduce

1. Create a new Confluence page
2. Insert a table
3. Select a row or a column
4. Set a background color to those cells
5. Save the page
6. Export the page to PDF

Expected Results

The exported page should be include the background colors of the cells

Actual Results

The exported page Doesn't include the background colors of the cells

Workaround

NA , we have  Scroll PDF Exporter for Confluence Data Center through the Atlassian Marketplace

Notes