[Win] scrollbars/transparent-scrollbar.html is failing Since bug#236061 added the test, this test is failing on Windows EWS. This test passes for my AppleWin build on my PC. I think accelerated compositing doesn't work on Windows EWS. In non-AC mode, scrollbars are painted by ScrollView::paintScrollbars. ScrollView doesn't know the document background color.
<rdar://problem/98654328>