In 10.21 sListView renders the first column with wrong background color. See attached image.
Sample application is attached, too.
There are only two lines changed from version 10.20 to 10.21. These lines are responsible for the problems:
(2097) Canvas.Brush.Color := Bmp.Canvas.Brush.Color;
(2098) Canvas.Font.Color := Font.Color;
Hope this will be fixed soon. As a hotfix I removed line 2097 and it looks OK now. But I guess you inserted the two lines for a reason.