ADDITIONAL SYSTEM INFORMATION :
OS Name: Microsoft Windows 11 Pro
OS Version: 10.0.22631 N/A Build 22631
openjdk version "21.0.4" 2024-07-16 LTS
OpenJDK Runtime Environment Corretto-21.0.4.7.1 (build 21.0.4+7-LTS)
OpenJDK 64-Bit Server VM Corretto-21.0.4.7.1 (build 21.0.4+7-LTS, mixed mode, sharing)
JavaFX Version 22.0.1 (gradle project)
(!) Sorry I could not update to JavaFX 24 or 25, this would need Java update, which I cannot do right now

A DESCRIPTION OF THE PROBLEM :
If the Tabs are added/removed (especially in quick successiion), at some time TabPane goes into "wrong" state and stops repainting itself.


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
See the minimal test case provided.
When I click +/- buttons (especially quick enough), the TabPane stops repainting itself and looks like frozen. The component can be "unfrozen" through moving any SplitPane or resizing the window.

(!) Found a workaround (originating from https://stackoverflow.com/questions/47616221/javafx-tabpane-tabs-dont-update-position):
tabPane.setStyle("-fx-close-tab-animation: NONE; -fx-open-tab-animation: NONE;");

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
TabPane stops repainting itselfs
ACTUAL -
TabPane reacts on Tabs being added/removed and on clicks on Tabs.

---------- BEGIN SOURCE ----------
import javafx.animation.AnimationTimer;
import javafx.application.Application;
import javafx.beans.binding.Bindings;
import javafx.geometry.Orientation;
import javafx.scene.Scene;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.control.*;
import javafx.scene.layout.HBox;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

public class Tmp extends Application {
    public static void main(String[] args) {
        Tmp.launch(args);
    }

    @Override
    public void start(Stage stage) {
        ResizableCanvas canvas = new ResizableCanvas();
        StackPane pane = new StackPane(canvas);

        TabPane tabPane = new TabPane();
        tabPane.getTabs().add(createTab("1"));

        SplitPane splitButtonsTabPane = new SplitPane(new TextArea("placeholder"), tabPane);

        Button btnAdd = new Button("+");
        btnAdd.setOnAction(evt -> tabPane.getTabs().add(createTab(String.format("%d", tabPane.getTabs().size() + 1))));

        Button btnRemove = new Button("-");
        btnRemove.disableProperty().bind(Bindings.isEmpty(tabPane.getTabs()));
        btnRemove.setOnAction(evt -> tabPane.getTabs().removeLast());

        VBox panelBelow = new VBox(splitButtonsTabPane, new HBox(btnAdd, btnRemove));

        SplitPane splitAboveBelow = new SplitPane(pane, panelBelow);
        splitAboveBelow.setOrientation(Orientation.VERTICAL);

        Scene scene = new Scene(splitAboveBelow);
        stage.setScene(scene);
        stage.show();

        new RedrawTimer(() -> redraw(canvas)).start();
    }

    private void redraw(Canvas canvas) {
        GraphicsContext gc = canvas.getGraphicsContext2D();
        gc.clearRect(0, 0, canvas.getWidth(), canvas.getHeight());
        gc.setLineWidth(1);
        gc.setStroke(Color.GREEN);
        gc.strokeRect(10, 10, 50, 50);
        gc.setStroke(Color.RED);
        gc.strokeRect(0, 0, canvas.getWidth(), canvas.getHeight());
    }

    private Tab createTab(String name) {
        Tab result = new Tab(name);
        result.setContent(new Label(name));
        return result;
    }


    // https://stackoverflow.com/questions/24533556/how-to-make-canvas-resizable-in-javafx
    private static class ResizableCanvas extends Canvas {
        @Override
        public boolean isResizable() {
            return true;
        }

        @Override
        public double maxHeight(double width) {
            return Double.POSITIVE_INFINITY;
        }

        @Override
        public double maxWidth(double height) {
            return Double.POSITIVE_INFINITY;
        }

        @Override
        public double minWidth(double height) {
            return 1D;
        }

        @Override
        public double minHeight(double width) {
            return 1D;
        }

        @Override
        public void resize(double width, double height) {
            this.setWidth(width);
            this.setHeight(height);
        }
    }

    private static class RedrawTimer extends AnimationTimer {
        private final Runnable runnable;

        public RedrawTimer(Runnable runnable) {
            this.runnable = runnable;
        }

        @Override
        public void handle(long now) {
            runnable.run();
        }
    }
}
---------- END SOURCE ----------