a call to `string.Replace` does not return on linux.

Build and run the following code on **Linux + .net core 2.1 or 2.2** SDK.
```
using System;
class Program
{
    static void Main(string[] args)
    {
        "abc".Replace("\0", "", StringComparison.InvariantCulture);
    }
}
```
The code results an infinity loop (high cpu usage) and never returns.

**Remark:**
The code works fine on windows.
The code works fine on .net core 3.1.