ADDITIONAL SYSTEM INFORMATION :
Windows 11 (Version 10.0.22621) (Windows 11 was not an option in the form so I picked 10 instead)
Oracle JDK 19 (build 19.0.2+7-44)

A DESCRIPTION OF THE PROBLEM :
When using a MediaPlayer and it is disposed and replaced repeatedly it sometimes does not start playing. There are no error logs even with `javafx.verbose=true`. The only logs I see is on startup where it loads DLL files from resources rather than from ".m2/repository". I am pretty sure this issue arose after I switched to Windows 11.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the code pasted in "Source code for an executable test case". It expects a resource file called "video.mp4". I recommend testing with a small video. Main#start() initializes JFX and the player. Main#reinit() is called twice per second and disposes the old player and creates a new one. After 3-10 restarts the video never starts playing and it will print "stuck!" repeatedly. If I remove the stuck check and let it keep reinitializing, it will start working again.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The video should keep restarting forever.
ACTUAL -
After a few restarts, nothing happens. The screen is white and the video never starts.

---------- BEGIN SOURCE ----------
package org.example;

import javafx.embed.swing.JFXPanel;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.scene.media.MediaView;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;

public class Main implements ActionListener {

    private Timer timer = new Timer(500, this);
    private MediaView viewer;
    private boolean prevStarted = true;

    public static void main(String[] args) {
        new Main().start();
    }

    private void start() {
        SwingUtilities.invokeLater(() -> {
            JFrame frame = new JFrame("FrameDemo");

            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

            JFXPanel jfxPanel = new JFXPanel();

            frame.setMinimumSize(new Dimension(500, 500));
            frame.add(jfxPanel);

            frame.pack();

            frame.setVisible(true);

            viewer = new MediaView();
            viewer.setFitWidth(500);
            viewer.setFitHeight(500);
            viewer.setPreserveRatio(true);

            StackPane pane = new StackPane();
            pane.getChildren().add(viewer);

            jfxPanel.setScene(new Scene(pane, 500, 500));
            timer.setInitialDelay(100);
            timer.start();
        });
    }

    private void reinit() {
        if (!prevStarted) {
            System.out.println("stuck!");
            return;
        }
        prevStarted = false;
        MediaPlayer oldPLayer = viewer.getMediaPlayer();
        if (oldPLayer != null) {
            oldPLayer.dispose();
        }

        MediaPlayer newPlayer = new MediaPlayer(new Media(new File("src/main/resources/video.mp4").toURI().toString()));
        newPlayer.setVolume(0);
        newPlayer.setOnPlaying(() -> {
            prevStarted = true;
        });
        newPlayer.play();

        viewer.setMediaPlayer(newPlayer);
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        reinit();
    }
}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Detect somehow that OnPlaying is never executed within x ms. If it has not started within that timeframe, replace the MediaPlayer and dispose the old one.

FREQUENCY : often