FULL PRODUCT VERSION :
Java(TM) SE Runtime Environment (build 9+181)
Java HotSpot(TM) 64-Bit Server VM (build 9+181, mixed mode)


ADDITIONAL OS VERSION INFORMATION :
Linux 4.10.0-35-generic #39-Ubuntu SMP Wed Sep 13 07:46:59 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux


EXTRA RELEVANT SYSTEM CONFIGURATION :
NVIDIA GeForce GTX 660 GPU.

A DESCRIPTION OF THE PROBLEM :
Glyphs in Text nodes are rendered with wrong spacing.



STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
- Run the attached sample.
- Click on the MultiNode button to see the text layout with multiple nodes.
- Click on the SingleNode button to see the text layout with one node.


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The rendered text should be identical in both cases.
ACTUAL -
The rendered text are not identical in both cases.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
public class GlyphSpacing extends Application
{
    public void start(final Stage primaryStage) throws Exception
    {
        Button singleNode = new Button("SingleNode");
        Button multiNode = new Button("MultiNode");
        TextFlow textFlow = new TextFlow(new Text(" .GlyphSpacing"));
        VBox root = new VBox(new HBox(singleNode, multiNode), textFlow);

        singleNode.setOnAction(e ->
        {
            textFlow.getChildren().clear();
            textFlow.getChildren().add(new Text(" .GlyphSpacing"));
        });

        multiNode.setOnAction(e ->
        {
            textFlow.getChildren().clear();
            textFlow.getChildren()
                    .addAll(new Text(" ."), new Text("GlyphSpacing"));
        });

        Scene scene = new Scene(root, 200, 200);

        primaryStage.setScene(scene);
        primaryStage.show();
    }
}
---------- END SOURCE ----------