Strange behavior in console with UTF-8

[Jonathan Villa via Digitalmars-d-learn]

I prefer to post this thing here because it could that I'm doing 
something wrong.

I'm using std.stdio -> readln() to read whatever I'm typing in 
the console.
BUT, if the line contains some UTF-8 characters, the data 
obtained is EMPTY and

<code>

module runnable;

import std.stdio;
import std.string : chomp;
import std.experimental.logger;

void doSomethingElse(wchar[] data)
{
     writeln("hello!");
}

int main(string[] args)
{
     /* Some fix I found to fix UTF-8 related problems, I'm using 
Windows 10 */
     version(Windows)
     {
         import core.sys.windows.windows;
         if (SetConsoleCP(65001) == 0)
             throw new Exception("failure");
         if (SetConsoleOutputCP(65001) == 0)
             throw new Exception("failure");
     }
     FileLogger fl = new FileLogger("log.log");
     wchar[] readerBuffer;

     readln(readerBuffer);
     readerBuffer = chomp(readerBuffer);

     fl.info(readerBuffer.length); /* <- if the readed string 
contains at least one UTF-8
                                         char this prints 0, else 
it prints its length
                                    */

     if (readerBuffer != "exit"w)
         doSomethingElse(readerBuffer);

     /* Also, all the following code doesn't run as expected, the 
program doesn't wait for
        you, it executes readln() even without pressing/sending a 
key */
     readln(readerBuffer);
     fl.info(readerBuffer.length);
     readln(readerBuffer);
     fl.info(readerBuffer.length);
     readln(readerBuffer);
     fl.info(readerBuffer.length);
     readln(readerBuffer);
     fl.info(readerBuffer.length);
     readln(readerBuffer);
     fl.info(readerBuffer.length);

     return 0;
}
</code>
The real code is bigger but this describes the bug. Also, if it 
needs to print UTF-8 there's no problem.

My main problem is that the line is gonna be sended through a TCP 
socket and I wanna make it work with UTF-8. I'm using WCHAR 
instead of CHAR with the hope to get less problems in the future.

I you comment the fixed Windows code, the program crashes
http://prntscr.com/ajmy14

Also I tried stdin.flush() right after the first readln() but 
nothing seems to fix it.

I'm doing something wrong?
many thanks.