Bug: ToolBar always using overflow menu whenever a scaled resolution set

Cormac Redmond credmond at certak.com
Sat Jul 19 10:11:33 UTC 2025


Hi,

There's a bug whenever using a ToolBar on Windows if you set your
resolution scale > 100% (which is quite common). E.g., 125%:

[image: image.png]

E.g., this is what a ToolBar always renders if scale is 125%:

[image: image.png]

As compared to what you'd expect (scale set to normal/100%):

[image: image.png]

Very easy to reproduce the above, set your scale to 125% and run this:

public class ToolbarBugApp extends Application {

    @Override
    public void start(Stage primaryStage) {
        BorderPane bp = new BorderPane();
        // Wrapping in HBox and using button with 13+ chars causes bug
        bp.setTop(new HBox(new ToolBar(new Button("Create Schema")))); //
BUG
        // bp.setTop(new ToolBar(new Button("Create Schema"))); // NO BUG
(no HBox)
        // bp.setTop(new HBox(new ToolBar(new Button("Create Schem")))); //
NO BUG (12 chars)
        primaryStage.setScene(new Scene(bp, 600, 400));
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}

As per the comments, this bug appears to happen when your ToolBar is
wrapped in a HBox and contains a Button that has 13+ characters, for
example. This is quite a serious bug, in my opinion.

I believe this is present in JFX 24 and the JFX 25 master branch.


Kind Regards,

*Cormac Redmond*
Software Engineer, Certak Ltd.

e: credmond at certak.com | m: +353 (0) 86 268 2152 | w: www.certak.com
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