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I have often noticed that examples of the past when done in newer versions of Mathematica generate inconsistent results. A prime example related to the following post (Character edge finding):

```
pic = Thinning@Binarize[GradientFilter[Rasterize[Style["\[Euro]",
FontFamily -> "Times"], ImageSize -> 200] // Image, 1]];
pdata = Position[ImageData[pic], 1];
lcp = ListCurvePathPlot[pdata];
```

**Mathematica 9.0 (best result)**

**Mathematica 10.4 (discontinuities exist)**

**Mathematica 11.2 (disconnected lines are visible)**

Obviously I know how to get results like that of version 9.0 in 11.2. But my question is simple: Why do some of the Mathematica functions with default options behave differently between newer and older versions ?

I am quite annoyed at WRI for these odd behaviours !

Have you figured out which functions have changed? Which default options are involved? – bill s – 2017-12-09T23:15:08.407