Layout test fast/regions/overflow-moving-below-floats-in-variable-width-regions.html is faling since turned into reftests in r155114 <http://trac.webkit.org/changeset/155114> Link to test results: http://build.webkit.org/results/EFL%20Linux%2064-bit%20Release%20WK2/r159499%20%2811503%29/fast/regions/overflow-moving-below-floats-in-variable-width-regions-diffs.html
Fixed in r162494 http://trac.webkit.org/changeset/162494