Bug 208471

Summary: [ Mac wk2 ] tiled-drawing/scrolling/fast-scroll-div-latched-mainframe-with-handler.html is flaky failing.
Product: WebKit Reporter: Jason Lawrence <Lawrence.j>
Component: ScrollingAssignee: Nobody <webkit-unassigned>
Status: RESOLVED DUPLICATE    
Severity: Normal CC: simon.fraser, webkit-bot-watchers-bugzilla, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Mac   
OS: macOS 10.14   

Description Jason Lawrence 2020-03-02 14:21:40 PST
tiled-drawing/scrolling/fast-scroll-div-latched-mainframe-with-handler.html

Description:
This test is flaky failing on Mac wk2. It appears to have been flaky failing throughout the visible history.

History:
https://results.webkit.org/?suite=layout-tests&test=tiled-drawing%2Fscrolling%2Ffast-scroll-div-latched-mainframe-with-handler.html&limit=50000

Diff:
--- /Volumes/Data/slave/catalina-debug-tests-wk2/build/layout-test-results/tiled-drawing/scrolling/fast-scroll-div-latched-mainframe-with-handler-expected.txt
+++ /Volumes/Data/slave/catalina-debug-tests-wk2/build/layout-test-results/tiled-drawing/scrolling/fast-scroll-div-latched-mainframe-with-handler-actual.txt
@@ -57,15 +57,15 @@
 (GraphicsLayer
   (anchor 0.00 0.00)
   (bounds 2008.00 2281.00)
-  (visible rect 0.00, 70.00 785.00 x 585.00)
-  (coverage rect 0.00, 70.00 785.00 x 585.00)
+  (visible rect 0.00, 20.00 785.00 x 585.00)
+  (coverage rect 0.00, 20.00 785.00 x 585.00)
   (intersects coverage rect 1)
   (contentsScale 1.00)
   (children 1
     (GraphicsLayer
       (bounds 2008.00 2281.00)
       (contentsOpaque 1)
-      (visible rect 0.00, 70.00 785.00 x 585.00)
+      (visible rect 0.00, 20.00 785.00 x 585.00)
       (coverage rect 0.00, 0.00 1570.00 x 1755.00)
       (intersects coverage rect 1)
       (contentsScale 1.00)
Comment 1 Radar WebKit Bug Importer 2020-03-02 14:22:12 PST
<rdar://problem/59967740>
Comment 2 Jason Lawrence 2020-03-02 14:27:04 PST
I have marked this test as failing while this issue is investigated.
https://trac.webkit.org/changeset/257738/webkit
Comment 3 Jason Lawrence 2020-03-02 14:33:00 PST
I can reproduce this issue with r257710 by running the command below.
run-webkit-tests --iterations 2000 --exit-after-n-failures 3 --no-retry --force -f --debug tiled-drawing/scrolling/fast-scroll-div-latched-mainframe-with-handler.html

[994/2000] tiled-drawing/scrolling/fast-scroll-div-latched-mainframe-with-handler.html failed unexpectedly (text diff)
1999 tests ran as expected, 1 didn't:
Comment 4 Simon Fraser (smfr) 2020-03-21 11:52:52 PDT
No longer flakey. Expectation removed in r258811.

*** This bug has been marked as a duplicate of bug 197819 ***