Bug 1321197 has been used to track failures on style system mochitests. It is probably better having a separate bug for tracking issues which block us from running some of the mochitests.

Xidorn, are the style mochitests all running now, including the testharness.js tests mentioned in bug 1339656? Can we close this meta bug? There are still some open bugs blocking this bug, but they don't look serious and we can track them independently.

Not all running at the moment. layout/style/test/test_align_shorthand_serialization.html is still skipped because of some disagreement between spec, gecko impl and servo impl. I don't think it is very important to have that enabled at this moment. layout/style/test/chrome/test_hover.html should probably be enabled... I'm less sure about test_animations_omta_start.html. I don't understand why we need to close this bug with some blocking bugs still open. It is a meta bug, we can just give it a P5 I guess.

test_hover.html is still disabled, but otherwise this bug as a tracking bug should be considered to be done. That single test should be tracked in bug 1346353.