Both tests: fast/multicol/newmulticol/remove-row-content5.html fast/multicol/newmulticol/remove-row-content9.html Are flaky Image Failures that also time out intermittently. This seems to be a recent occurrence. I was unable to reproduce the failures locally. https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=fast%2Fmulticol%2Fnewmulticol%2Fremove-row-content5.html https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=fast%2Fmulticol%2Fnewmulticol%2Fremove-row-content9.html https://build.webkit.org/results/Apple%20iOS%2010%20Simulator%20Debug%20WK2%20(Tests)/r217220%20(1540)/results.html https://build.webkit.org/builders/Apple%20iOS%2010%20Simulator%20Debug%20WK2%20(Tests)/builds/1540