media/W3C/video/events/event_progress.html is flaky on wk2 according to the flakiness dashboard.
First failure on the board is with this build: https://build.webkit.org/builders/Apple%20El%20Capitan%20Debug%20WK2%20(Tests)/builds/2128
However this does not look to be the regression point.
Current results: https://build.webkit.org/results/Apple%20El%20Capitan%20Debug%20WK2%20(Tests)/r220854%20(2599)/results.html
@@ -6,6 +6,9 @@
PASS true is true
+PASS true is true
Marked as flaky on WK2:
This is also happening on WK1 bots. Updated test expectations in https://trac.webkit.org/r245013
This test case will fail when the video element fires more than one "progress" event before the test case complete.
*** This bug has been marked as a duplicate of bug 181966 ***