ADDITIONAL SYSTEM INFORMATION :
Windows 10 10.0.17134 Build 17134
Occurs using JDK and OpenJDK version 11.0.2
Does not occur using JDK 8u201

A DESCRIPTION OF THE PROBLEM :
When calling Graphics2D.drawString() with a Font that should be ITALIC but does not have an installed italic font face, the text is rendered without an oblique style.  When running with JDK 8, the italic font face is synthesized.  

REGRESSION : Last worked in version 8u181

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Find an installed font that does not have an italic font face (Impact is a good choice for Windows)
2. Create a new font object with the font from step 1 ( new Font("Impact", Font.ITALIC, 18); )
3. Create or get a Graphics2D object ( bufferedImage.createGraphics() )
4. set the font from step 2 on the graphics object from step 3 ( g.setFont(font) )
5. draw a String ( g.drawString(...) )

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The displayed text has an oblique style.
ACTUAL -
The displayed text is not oblique and instead appears like it was rendered as Font.PLAIN (or Font.BOLD when bold italic is desired).

---------- BEGIN SOURCE ----------
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.GraphicsConfiguration;
import java.awt.image.BufferedImage;

import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;

public class SimpleFontTest {
	private static Font FONT = new Font("Impact", Font.ITALIC, 18);
	private static String TEXT = "The Quick Brown Fox";

	public static void main(String args[]){		
		if (args.length > 0 && args[0] != null) {
			String fontName = args[0];
			FONT = new Font(fontName, Font.ITALIC, 18);
		}

		JFrame f = new JFrame("Simple Font Test: " + System.getProperty("java.vendor"));
		f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

		JLabel label = new JLabel("JLabel: " + TEXT);
		label.setFont(FONT);
		
		System.out.println(System.getProperty("java.vendor"));
		System.out.println(System.getProperty("java.version"));

		GraphicsConfiguration gc = f.getGraphicsConfiguration();
		BufferedImage image = gc.createCompatibleImage(400, 50);
		Graphics2D g = image.createGraphics();
		g.setFont(FONT);
		g.setColor(Color.BLACK);
		g.setBackground(Color.WHITE);
		g.clearRect(0, 0, image.getWidth(), image.getHeight());
		g.drawString("BufferedImage: " + TEXT, 10, 15);
		g.dispose();
		JLabel picLabel = new JLabel(new ImageIcon(image));

		f.add(label, BorderLayout.PAGE_START);
		f.add(picLabel, BorderLayout.CENTER);
		f.setSize(400, 200);
		f.setVisible(true);
	}
}
---------- END SOURCE ----------

FREQUENCY : always