It looks like the changes in https://trac.webkit.org/changeset/279806/webkit Broke two tests: inspector/canvas/recording-webgl-snapshots.html inspector/canvas/requestClientNodes-css.html History: https://results.webkit.org/?suite=layout-tests&suite=layout-tests&test=inspector%2Fcanvas%2Frecording-webgl-snapshots.html&test=inspector%2Fcanvas%2FrequestClientNodes-css.html Diff: --- /Volumes/Data/worker/bigsur-release-tests-wk2/build/layout-test-results/inspector/canvas/recording-webgl-snapshots-expected.txt +++ /Volumes/Data/worker/bigsur-release-tests-wk2/build/layout-test-results/inspector/canvas/recording-webgl-snapshots-actual.txt @@ -41,7 +41,7 @@ 4: evaluateWithScopeExtension 5: (anonymous function) 6: _wrapCall - snapshot: <PASS: content changed> + snapshot: <FAIL: content changed> 3: bufferData(34962, 0, 35044) swizzleTypes: [Number, TypedArray, Number] trace: @@ -62,7 +62,7 @@ 4: evaluateWithScopeExtension 5: (anonymous function) 6: _wrapCall - snapshot: <PASS: content changed> + snapshot: <FAIL: content changed> 5: clearColor(0, 0, 0, 1) swizzleTypes: [Number, Number, Number, Number] trace: @@ -83,7 +83,7 @@ 4: evaluateWithScopeExtension 5: (anonymous function) 6: _wrapCall - snapshot: <PASS: content changed> + snapshot: <FAIL: content changed> 7: bufferData(34962, 0, 35044) swizzleTypes: [Number, TypedArray, Number] trace: @@ -114,7 +114,7 @@ 4: evaluateWithScopeExtension 5: (anonymous function) 6: _wrapCall - snapshot: <PASS: content changed> + snapshot: <FAIL: content changed> 10: clearColor(0, 0, 0, 1) swizzleTypes: [Number, Number, Number, Number] trace: @@ -135,5 +135,5 @@ 4: evaluateWithScopeExtension 5: (anonymous function) 6: _wrapCall - snapshot: <PASS: content changed> + snapshot: <FAIL: content changed>