raw_input() not returning back on hitting ENTER key on ppc64le platform

### Description

I am trying to access simple python code through C# code using IronPython 2.7.12 on ppc64le architecture. 
```
dotnet --version
7.0.105
```

But I am facing issue with raw_input() API. It does not return back when user hits ENTER key. I have to use Ctrl-D to return from raw_input()

What could be reason behind this? Can someone help here?