Floodfill gives different results on different machines

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• OpenCV version: 3.1
• Host OS: Mac OS X 10.11.4

Issue in imgproc -> Floodfill function

I have a method that uses floodfill function on an image. The issue is that I get different results when running the code on different machines, even with same opencv version. Has anyone else experienced this issue? I can't figure out what is causing this.

original image:

Mac OS X EI Capitan, OpenCV version: 3.1:

Ubuntu 14.04.4 LTS, OpenCV version: 3.1:

floodFill( blurredImage, cv::Mat(), cv::Point(blurredImage.cols/2,y), cv::Vec3b(255,255,255), 0, cv::Scalar::all(1), cv::Scalar::all(1) , 8 | 255<<8 );