ADDITIONAL SYSTEM INFORMATION :
Windows 10.0.19043.1348

A DESCRIPTION OF THE PROBLEM :
Running the attached code creates a long line in the produced image

REGRESSION : Last worked in version 8u311

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
run code
open the result PNG image


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
very tiny black line
ACTUAL -
long black line

---------- BEGIN SOURCE ----------

import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.geom.AffineTransform;
import java.awt.geom.GeneralPath;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;

public class PDFBOX_5322
{
    public static void main(String[] args) throws IOException
    {
        BufferedImage bim = new BufferedImage(623, 311, BufferedImage.TYPE_INT_RGB);
        Graphics2D g2d = (Graphics2D) bim.getGraphics();
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g2d.setBackground(Color.white);
        g2d.clearRect(0, 0, bim.getWidth(), bim.getHeight());
        g2d.setColor(Color.black);
        g2d.transform(new AffineTransform(1f, 0f, 0f, -1f, 0, 311f));
        GeneralPath path = new GeneralPath();
        path.moveTo(438.5315f, 261.2291f);
        path.curveTo(437.8919f, 265.3086f, 437.6903f, 265.3338f, 437.6903f, 265.3338f);
        path.curveTo(437.5043f, 265.3571f, 437.3822f, 265.2621f, 437.3822f, 265.2621f);
        g2d.draw(path);
        g2d.dispose();
        ImageIO.write(bim, "png", new File("PDFBOX-5322.png"));
    }
}

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Use jdk8, or don't use antialiasing

FREQUENCY : always