FULL PRODUCT VERSION :
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-bit Server VM (build 25.131-b11, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 6.1.7601]

EXTRA RELEVANT SYSTEM CONFIGURATION :
Swiss German keyboard layout

A DESCRIPTION OF THE PROBLEM :
When using the swiss german keyboard layout, it is not possible to type characters with tilde (i.e.: ã). Instead of these characters, a different character appears (ẫ).

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Use swiss german keyboard layout
2. Run the attached java fx application
3. Type '~'
4. Type 'a'

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The textfield contains 'ã'
ACTUAL -
The textfield contains 'ẫ'

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
package io.prc.violet.taskbench.omnibox;

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.TextField;
import javafx.stage.Stage;

public class TildeCharacterFailSwissGerman extends Application {

    public static void main() {
        TildeCharacterFailSwissGerman.launch(TildeCharacterFailSwissGerman.class);
    }

    @Override
    public void start(final Stage primaryStage) throws Exception {
        primaryStage.setScene(new Scene(new TextField()));
        primaryStage.show();
    }

}

---------- END SOURCE ----------