Created attachment 78815 [details] Testcase The attached testcase, which Safari fails, and FF passes, shows an issue where we compute percentage heights incorrectly. The spec says that they should be computed relative to the height of the containing block <http://www.w3.org/TR/CSS21/visudet.html#propdef-height> but maybe we disagree on what the containing block is, because of anonymous blocks (since the parent is inline)?
I think the relevant section is <http://www.w3.org/TR/CSS21/visudet.html#containing-block-details>
*** This bug has been marked as a duplicate of bug 29189 ***