FULL PRODUCT VERSION :
java version "1.8.0_91"
Java(TM) SE Runtime Environment (build 1.8.0_91-b14)
Java HotSpot(TM) Client VM (build 25.91-b14, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Windows 7 Service Pack 1

A DESCRIPTION OF THE PROBLEM :
Using transform: scale() does not work when setting it in the svg tag (<svg ...... transform="scale(2)"> or by setting the style attribute (transform: scale(2)). This works in every other browser.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Create a simple SVG file. In the svg tag add the attribute transform: scale(1);
<svg version="1.1" xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink"
viewBox="-100 -100 200 200" preserveAspectRatio="xMidYMid" xml:space="preserve"
zoomAndPan="magnify" onload="diagramOnLoad(evt)" >

<style>
svg {
transform: scale(1);
}
</style>


<rect x="-100" y="-100" width="200" height="200" stroke-width="0.2" stroke="black" fill="lightgray" />
<rect x="-50" y="-50" width="100" height="100" stroke-width="0.8" stroke="green" fill="none" />
<circle cx="0" cy="0" r="80" stroke-width="0.8" stroke="red" fill="none" />

<circle cx="0" cy="0" r="2" fill="orange" stroke="black" stroke-width="0.2" />
<polyline stroke="black" stroke-width="0.2" points="0,-2 0,2 0,0 -2,0 2,0 0,0" fill="none" />
</svg>


2. Load the SVG file into a webkit browser
3. Observe the size.
4. Change the scale to 2. (transform: scale(2);)
5. Load the SVG file into a Webkit browser



EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The zoom level should have changed.
ACTUAL -
No change to the diagram occurred. When you perform the same steps using IE, FireFox or Chrome, the zoom level changes.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
package webviewsample;

import java.io.File;

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.Region;
import javafx.scene.paint.Color;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebView;
import javafx.stage.FileChooser;
import javafx.stage.Stage;

@SuppressWarnings("restriction")
public class SimpleSVGBrowser extends Application {
    private Scene scene;

    public class Browser extends Region {
     
        final WebView browser = new WebView();
        final WebEngine webEngine = browser.getEngine();
        final FileChooser fileChooser = new FileChooser();
        final Button fileChooserButton = new Button("Select File");
        
        File currentFile = null;
        public Browser(Stage stage) {

            fileChooserButton.setOnAction(new EventHandler<ActionEvent>() {
                @Override
                public void handle(ActionEvent event) {
                    currentFile = fileChooser.showOpenDialog(null);
                     if(currentFile != null){
                             webEngine.load("file:/"+currentFile);
                            fileChooser.setInitialDirectory(currentFile.getParentFile());
                        }
                }
            });

            
            getChildren().add(browser);
            getChildren().add(fileChooserButton);
        }
    }

    
    
    
    @Override
    public void start(Stage stage) throws Exception {
        // create scene
        stage.setTitle("Web View");
        Browser svgBrowser = new Browser(stage);
        scene = new Scene(svgBrowser, 750, 500, Color.web("#666970"));
        stage.setScene(scene);
        stage.show();
        
    }
    
    public static void main(String[] args) {
        launch(args);
    }
}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
No workaround. I have tried currentScale in the svg tag that did not work either.