[Webkit-unassigned] [Bug 241205] New: REGRESSION (250778 at main): [ iOS ] fast/forms/textfield-outline.html is a flaky failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=241205

            Bug ID: 241205
           Summary: REGRESSION (250778 at main): [ iOS ]
                    fast/forms/textfield-outline.html is a flaky failure
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: rackler at apple.com

Description:
fast/forms/textfield-outline.html

The first failure that I saw on the dashboard was on 5/20/2022 at 250788 at main.

REPRODUCTION STEPS
I can reproduce this on 250778 at main, but unable to reproduce it on 250777 at main or earlier.

Command: 
run-webkit-tests --ios-simulator --debug --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 --iterations 50 --no-retry fast/forms/textfield-outline.html

Result: 
Unexpected flakiness: text-only failures (1)
  fast/forms/textfield-outline.html [ Failure Pass ]

History:
https://results.webkit.org/?suite=layout-tests&test=fast%2Fforms%2Ftextfield-outline.html&platform=ios&limit=50000

Diff:
--- /Volumes/Data/worker/Apple-iOS-15-Simulator-Debug-WK2-Tests/build/layout-test-results/fast/forms/textfield-outline-expected.txt
+++ /Volumes/Data/worker/Apple-iOS-15-Simulator-Debug-WK2-Tests/build/layout-test-results/fast/forms/textfield-outline-actual.txt
@@ -8,7 +8,7 @@
       RenderBR {BR} at (562,0) size 1x19
       RenderTextControl {INPUT} at (2,22) size 265x37 [bgcolor=#FFFFFF] [border: (1px solid #000000)]
       RenderText {#text} at (0,0) size 0x0
-layer at (21,35) size 243x25 scrollX 268 scrollWidth 511
+layer at (21,35) size 243x25 scrollWidth 511
   RenderBlock {DIV} at (11,5) size 243x25
     RenderText {#text} at (0,0) size 509x25
       text run at (0,0) width 509: "This tests that typing doesn't cut holes in the focus outline"

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