private void initializeWithoutAttach() {
		Label graphic = new Label();
		graphic.setGraphic(new FontIconView(CarbonIcons.ERROR, 128, Color.RED));
		graphic.setAlignment(Pos.CENTER);

		Label title = new Label();
		title.getStyleClass().add(Styles.TITLE_1);
		title.textProperty().bind(getBinding("attach.unsupported"));
		title.setAlignment(Pos.CENTER);

		Label description = new Label();
		description.getStyleClass().add(Styles.TITLE_4);
		description.textProperty().bind(getBinding("attach.unsupported.detail"));
		description.setAlignment(Pos.CENTER);

		VBox box = new VBox(graphic, title, description);
		box.setMaxHeight(Double.MAX_VALUE);
		box.setMaxWidth(Double.MAX_VALUE);
		box.setMinHeight(250);
		box.setMinWidth(300);
		box.setAlignment(Pos.CENTER);
		box.getStyleClass().add("tooltip");

		// Layout 'box' centered on the pane
		VBox vwrap = new VBox(box);
		vwrap.setAlignment(Pos.CENTER);
		vwrap.setMaxHeight(Double.MAX_VALUE);
		vwrap.setMaxWidth(Double.MAX_VALUE);
		HBox hwrap = new HBox(vwrap);
		hwrap.setAlignment(Pos.CENTER);
		hwrap.setMaxHeight(Double.MAX_VALUE);
		hwrap.setMaxWidth(Double.MAX_VALUE);
		hwrap.setMouseTransparent(true);

		setCenter(hwrap);
	}
Place a warning box stating that the feature is not available.
recaf-ui/src/main/java/software/coley/recaf/ui/pane/RemoteVirtualMachinesPane.java