REGRESSION (r269359): [ Mac ] http/tests/inspector/dom/disconnect-dom-tree-after-main-frame-navigation.html is flaky failing

• Component: Web Inspector
• Status: NEW ---

[Truitt Savell]

http/tests/inspector/dom/disconnect-dom-tree-after-main-frame-navigation.html

This test began failing around r269439. I am able to reproduce this currently but cannot bisect the issue. 

History:
https://results.webkit.org/?suite=layout-tests&test=http%2Ftests%2Finspector%2Fdom%2Fdisconnect-dom-tree-after-main-frame-navigation.html

Diff:
--- /Volumes/Data/slave/catalina-release-tests-wk2/build/layout-test-results/http/tests/inspector/dom/disconnect-dom-tree-after-main-frame-navigation-expected.txt
+++ /Volumes/Data/slave/catalina-release-tests-wk2/build/layout-test-results/http/tests/inspector/dom/disconnect-dom-tree-after-main-frame-navigation-actual.txt
@@ -1,6 +1,7 @@
 Testing that DOMTrees are not retained by DOMTreeManager across main frame navigations.
 
 
+ERROR: Missing frame for given frameId
 
 == Running test suite: DOM.DisconnectTreeOnMainResourceChange
 -- Running test case: CheckLazyInitializationOfDOMTree

Reproduced with command:
run-webkit-tests --iterations 2000 --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 --debug-rwt-logging --no-retry --force --no-build -f http/tests/inspector/dom/disconnect-dom-tree-after-main-frame-navigation.html

[Radar WebKit Bug Importer]

<rdar://problem/71642438>

[Truitt Savell]

This test was last modified in r269359. likely regression point then

[Truitt Savell]

Marked this as failing in https://trac.webkit.org/changeset/270527/webkit