[Webkit-unassigned] [Bug 196495] New: [ iOS Sim ] Layout Test fast/viewport/ios/viewport-shrink-to-fit-on-new-navigation.html is a flaky failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=196495

            Bug ID: 196495
           Summary: [ iOS Sim ] Layout Test
                    fast/viewport/ios/viewport-shrink-to-fit-on-new-naviga
                    tion.html is a flaky failure
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sroberts at apple.com
                CC: lforschler at apple.com

The following layout test is failing on iOS Simulator Release

fast/viewport/ios/viewport-shrink-to-fit-on-new-navigation.html

Probable cause:

Test was added in https://trac.webkit.org/changeset/242069/webkit and is a flaky failure on its entire available history in dashboard. When testing locally it will either fail with a timeout, or a timeout and a text diff. Will get about 5 iterations in and start failing when testing locally.

Test failing is also affecting EWS

Reproduced with: 

run-webkit-tests fast/viewport/ios/viewport-shrink-to-fit-on-new-navigation.html --iterations 100 -f --ios-simulator --exit-after-n-failures=5

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=fast%2Fviewport%2Fios%2Fviewport-shrink-to-fit-on-new-navigation.html

Diff:

--- /Volumes/Data/slave/ios-simulator-12-release-tests-wk2/build/layout-test-results/fast/viewport/ios/viewport-shrink-to-fit-on-new-navigation-expected.txt
+++ /Volumes/Data/slave/ios-simulator-12-release-tests-wk2/build/layout-test-results/fast/viewport/ios/viewport-shrink-to-fit-on-new-navigation-actual.txt
@@ -1,6 +1,6 @@
 ALERT: pageshow - not from cache
 ALERT: pageshow - from cache
-window size: [1008, 1726]
+window size: [320, 548]
 zoom scale: 0.32

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