See http://test-results.appspot.com/dashboards/flakiness_dashboard.html#group=%40ToT%20-%20chromium.org&tests=svg%2Fbatik%2Fmasking%2FmaskRegions.svg%2Csvg%2Fbatik%2Ftext%2FtextProperties2.svg%2Csvg%2Fbatik%2Ftext%2FverticalTextOnPath.svg&showExpectations=true . The tests seem to have some sort of border and lower-right corner "watermark" image. Occasionally on Windows, these aren't drawn.