The attached test case works fine in Firefox, but has problems in WebKit - with the included steps to reproduced, some content doesn't appear as it should.
Created attachment 7376 [details] test case
Created attachment 7542 [details] Reduction As in the original test case, resizing the window after Step 2 restores the missing text.
The proposed patch for bug 9121 fixes the reduction, but not the actual test case.
*** This bug has been marked as a duplicate of 9121 ***