row background colors (with alpha channel) in html tables draw twice

If you insert html into a QTextEdit with an alpha channel on the row background color, the background is drawn once for the row, and then again for the text, and so the background will end up with two different colors (the background color behind the text is drawn twice).

The solution should be when the text for a table row is drawn, a background shouldn't be redrawn...

A minimal example has been attached to show the problem and a png to show what it looks like.