[Webkit-unassigned] [Bug 278178] New: [macOS Debug] imported/w3c/web-platform-tests/css/cssom-view/scroll-behavior-smooth-positions.html is a flaky failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=278178

            Bug ID: 278178
           Summary: [macOS Debug]
                    imported/w3c/web-platform-tests/css/cssom-view/scroll-
                    behavior-smooth-positions.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: darbinyan at apple.com

The following test is flaky failure on MacOS and EWS. 

imported/w3c/web-platform-tests/css/cssom-view/scroll-behavior-smooth-positions.html


The test has been flaky for a while and the regression point is not visible. 

Error logs:
@@ -20,5 +20,5 @@
 PASS Scroll positions when performing smooth scrolling from 0 to 250 by setting scrollTop
 PASS Scroll positions when performing smooth scrolling from 500 to 250 by setting scrollTop
 PASS Scroll positions when aborting a smooth scrolling with another smooth scrolling
-PASS Scroll positions when aborting a smooth scrolling with an instant scrolling
+FAIL Scroll positions when aborting a smooth scrolling with an instant scrolling assert_equals: ScrollLeft should stay at final position expected 500 but got 1403

History:
https://results.webkit.org/?platform=ios&platform=mac&style=debug&suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcssom-view%2Fscroll-behavior-smooth-positions.html

Link to Diff:
https://build-safari.apple.com/results/Trunk-GlowC-Debug-WK2-Tests/282279@main_b3627f0df038ebecabb8c372efaeb3bd52ce660f%20(91)/imported/w3c/web-platform-tests/css/cssom-view/scroll-behavior-smooth-positions-pretty-diff.html

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