A DESCRIPTION OF THE PROBLEM :
When I create a button and set the padding property, I get the following unexpected behavior:
An entirely unrelated button changes it's padding to 0 when I hover over it with my mouse. This button is entirely unrelated and should not ever be influenced by the first button.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Setup JavaFX application with the below source code. Press the "weirdButton" (narrow one without text) WIHTOUT hovering over the "cancelButton" (text=Abbrechen), then hover over Abbrechen button. Only then does the cancel button hover behavior break.
Use the following maven dependency:
<dependency>
<groupId>org.openjfx</groupId>
<artifactId>javafx-controls</artifactId>
<version>19.0.2.1</version>
</dependency>

Specific OS: Ubuntu 20.04.6 LTS

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Padding of the "weirdButton" is affected, "cancelButton" does not change.
ACTUAL -
"cancelButton" changes padding to 0 when hovering.

---------- BEGIN SOURCE ----------
package testing;

import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.layout.HBox;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class MVE extends Application {
    @Override
    public void start(Stage primaryStage) {
        var root = new StackPane();
        var vbox = new VBox();
        var hbox = new HBox();
        var textBox = new VBox();
        var textField = new TextField();
        textBox.getChildren().add(textField);
        var label = new Label("TestLabel");
        var weirdButton = new Button();
        weirdButton.setText("");
        weirdButton.setPadding(new Insets(2.0));
        hbox.getChildren().add(label);
        hbox.getChildren().add(weirdButton);
        vbox.getChildren().add(textBox);
        vbox.getChildren().add(hbox);
        var cancelButton = new Button("Abbrechen");
        cancelButton.setCancelButton(true);
        vbox.getChildren().add(cancelButton);
        root.getChildren().add(vbox);
        var scene = new Scene(root, 640, 480);
        primaryStage.setScene(scene);
        primaryStage.setTitle("MVE");
        primaryStage.setResizable(false);
        primaryStage.show();
    }
}
---------- END SOURCE ----------