A DESCRIPTION OF THE PROBLEM :
JTextArea does not line-wrap at the specified position.

REGRESSION : Last worked in version 8u181

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Compile the following source code for an executable test case..
2. Run the program.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The 20th character is displayed without wrapping.

--------------------
12345678901234567890

--------------------
ACTUAL -
The 20th character is displayed with wrapping.

--------------------
1234567890123456789
0
--------------------

---------- BEGIN SOURCE ----------
import java.awt.*;
import javax.swing.*;

public class JTextAreaTest extends JFrame {
  public static void main(String[] args) {
    SwingUtilities.invokeLater(() -> {
      JTextAreaTest test = new JTextAreaTest();
      test.pack();
      test.setVisible(true);
    });
  }

  public JTextAreaTest() {
    JTextArea textarea = new JTextArea(2, 20);
    textarea.setLineWrap(true);
    textarea.setWrapStyleWord(false);
    textarea.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 13));
    textarea.setText("12345678901234567890");

    JPanel panel = new JPanel();
    panel.setLayout(new FlowLayout());
    panel.add(textarea);

    setContentPane(panel);
    setDefaultCloseOperation(EXIT_ON_CLOSE);
  }
}
---------- END SOURCE ----------

FREQUENCY : always