There should be a green rectangle drawn for this test.
IE8 Mode and IE9 Mode (All Versions)
There is a small green line at the bottom of a red rectangle but there is no green rectangle that is visible.
The test case fails because the style sheet parsing is expected to stop when there is a byte-order mark (in this case, EF BB BF) that conflicts with the @charset declaration.
Section 2.1.9, V0008