How the tables have turned ...
Here's the list of the reference tests that are failing after the subpixel layout was enabled on the GTK port:
Of course, the failures should be investigated.
(In reply to comment #0)
The tests flagged in bug #122511 have a very similar issue to the previous one.
css3/flexbox/auto-margins.html is passing since r178063 which updates the test expectations. I will remove this bug from TestExpectations file.