Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1349891
Leg Name: MacCatalyst UITests CoreCLR / Controls Image,ImageButton,IndicatorView,InputTransparent,IsEnabled,IsVisible

Error Message

{
  "ErrorMessage": "Snapshot different than baseline: Issue16918Test.png",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Description

Issue16918Test fails with a screenshot baseline mismatch on MacCatalyst in every net11.0 CI build checked (5/5 builds). This is unrelated to the BottomNavigationView MaxItemCount issue (#34586) — it is a standalone flaky Mac test.

Previously tracked as part of #34586 but split out since it has a different root cause.

Affected builds

• Build 1349891 (PR [Android] Clamp BottomNavigationView MaxItemCount to 5 for Material3 net11.0 compatibility #34601)
• Build 1345702 (net11.0 branch)
• Build 1345000 (net11.0 branch)
• Build 1342062 (PR [automated] Merge branch 'main' => 'net11.0' #34550)
• Build 1346011 (net11.0 branch)

Pattern validated with Test-KnownIssuePattern.ps1: PASS

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1349891
Error message validated: [Snapshot different than baseline: Issue16918Test.png]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 3/24/2026 8:05:50 PM UTC

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Summary