Bug 230850

Summary:	[ iOS 14 ] remote-layer-tree/ios/uiview-tree-basic.html is a flaky failure
Product:	WebKit	Reporter:	ayumi_kojima
Component:	New Bugs	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	sam, thorton, webkit-bot-watchers-bugzilla, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	iPhone / iPad
OS:	Unspecified

Description ayumi_kojima 2021-09-27 10:57:24 PDT

remote-layer-tree/ios/uiview-tree-basic.html

Is a flaky failure on iOS 14 E Simulator.

History: https://results.webkit.org/?suite=layout-tests&test=remote-layer-tree%2Fios%2Fuiview-tree-basic.html

Diff:

--- /Volumes/Data/worker/ios-simulator-14-release-tests-wk2/build/layout-test-results/remote-layer-tree/ios/uiview-tree-basic-expected.txt
+++ /Volumes/Data/worker/ios-simulator-14-release-tests-wk2/build/layout-test-results/remote-layer-tree/ios/uiview-tree-basic-actual.txt
@@ -47,18 +47,18 @@
           (layer bounds [x: 0 y: 0 width: 0 height: 0])
           (layer anchorPoint [x: 0 y: 0]))
         (view [class: <class not in allowed list of classes>]
-          (layer bounds [x: 0 y: 0 width: 3 height: 594])
+          (layer bounds [x: 0 y: 0 width: 3 height: 7])
           (layer position [x: 795.5 y: 795.5])
           (layer zPosition 1000)
           (subviews
             (view [class: UIView]
-              (layer bounds [x: 0 y: 0 width: 3 height: 594])
+              (layer bounds [x: 0 y: 0 width: 3 height: 7])
               (layer position [x: 1.5 y: 1.5]))))
         (view [class: <class not in allowed list of classes>]
-          (layer bounds [x: 0 y: 0 width: 794 height: 3])
-          (layer position [x: 400 y: 400])
+          (layer bounds [x: 0 y: 0 width: 7 height: 3])
+          (layer position [x: 793.5 y: 793.5])
           (layer zPosition 1000)
           (subviews
             (view [class: UIView]
-              (layer bounds [x: 0 y: 0 width: 794 height: 3])
-              (layer position [x: 397 y: 397]))))))))
+              (layer bounds [x: 0 y: 0 width: 7 height: 3])
+              (layer position [x: 3.5 y: 3.5]))))))))

Comment 1 Radar WebKit Bug Importer 2021-09-27 10:57:43 PDT

<rdar://problem/83581239>

Comment 2 ayumi_kojima 2021-09-27 11:53:39 PDT

Marked test expectations: https://trac.webkit.org/changeset/283128/webkit

Comment 3 ayumi_kojima 2021-09-29 13:41:56 PDT

I was not able to reproduce the failure locally on iOS 14 sim using run-webkit-tests --force --ios-simulator --iterations 100 --exit-after-n-failures 1 remote-layer-tree/ios/uiview-tree-basic.html

Comment 4 Tim Horton 2022-04-25 22:57:38 PDT

I think those are scrollbars??