[Webkit-unassigned] [Bug 192677] New: REGRESSION [ Mac Debug ] Layout Test inspector/css/createStyleSheet.html is flaky failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=192677

            Bug ID: 192677
           Summary: REGRESSION [ Mac Debug ] Layout Test
                    inspector/css/createStyleSheet.html is 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: tsavell at apple.com
                CC: lforschler at apple.com

The following layout test is flaky on Mac Debug

inspector/css/createStyleSheet.html

Probable cause:

Unknown, test began failing recently around 11/21. Attempting to regress. 

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=http%2Ftests%2Fcontentdispositionattachmentsandbox%2Freferer-header-stripped-with-meta-referer-default.html

Diff:
--- /Volumes/Data/slave/sierra-debug-tests-wk2/build/layout-test-results/inspector/css/createStyleSheet-expected.txt
+++ /Volumes/Data/slave/sierra-debug-tests-wk2/build/layout-test-results/inspector/css/createStyleSheet-actual.txt
@@ -1,5 +1,9 @@
 Test CSS.createStyleSheet.

+ERROR: Received a command response without a corresponding callback or promise. [object Object] 
+ERROR: Received a command response without a corresponding callback or promise. [object Object] 
+ERROR: Received a command response without a corresponding callback or promise. [object Object] 
+ERROR: Received a command response without a corresponding callback or promise. [object Object] 

 == Running test suite: CSS.createStyleSheet
 -- Running test case: CheckNoStyleSheets

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