Text typed into JavaFX TextField doesn't show - Samsung Galaxy S9

Question

This questions regards using javafxports version '1.3.18' with Android SDK 29 within a Gradle project.

I am having a strange issue which seems to only be with Samsung Galaxy phones.

• I see no text appear within the TextField whilst I type, yet when I press the spacebar, the text I have typed appears.
• If I type without pressing spacebar, so my text is still invisible and click the 'search' button, the input is taken and the program continues as it should.
• If I input an emoji, the input is shown straight away.

I have tried to add a listener to the TextField, yet nothing is received until spacebar pressed when text entered.

I found other questions that have very similar sounding issue, all Samsung Galaxy phones, but with no fixes listed:

• textfield & combobox problem in javafx android
• JavaFxPorts TextField Issue - Android Keyboard wont function
• TextField Issue - Android Keyboard wont function

I have tried the response adding the following to a 'java.custom' properties file to the Resources folder of the project, which did not work:

• monocle.stackSize=128000
• monocle.platform=Android

Terrible quality screen recording of the issue (sorry my friend sent): https://www.youtube.com/watch?v=VRFzx8hDgtE

My build.gradle file:

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'org.javafxports:jfxmobile-plugin:1.3.18'
        classpath 'javax.mail:javax.mail-api:1.6.2'



    }
}

apply plugin: 'org.javafxports.jfxmobile'

repositories {
    jcenter()
    maven {
        url 'http://nexus.gluonhq.com/nexus/content/repositories/releases'

    }
}

mainClassName = 'src.sample.Main'

dependencies {

    compile 'com.gluonhq:charm:5.0.2'
    compile 'com.google.code.gson:gson:2.8.6'
    compile 'com.sun.mail:android-mail:1.6.2'
    compile 'com.sun.mail:android-activation:1.6.2'
    compile 'com.jfoenix:jfoenix:8.0.8'
    compile 'org.jsoup:jsoup:1.13.1'

}


jfxmobile {
    downConfig {
        version = '3.8.6'
        // Do not edit the line below. Use Gluon Mobile Settings in your project context menu instead
        plugins 'display', 'lifecycle', 'statusbar', 'storage'
    }
    android {
        manifest = 'src/android/AndroidManifest.xml'
        compileSdkVersion = 29
        buildToolsVersion = "29.0.3"
    }
    ios {
        infoPList = file('src/ios/Default-Info.plist')
        forceLinkClasses = [
                'com.gluonhq.**.*',
                'javax.annotations.**.*',
                'javax.inject.**.*',
                'javax.json.**.*',
                'org.glassfish.json.**.*'
        ]
    }
}

My AndroidManifest.xml file:

<?xml version="1.0" encoding="UTF-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="src.sample" android:versionCode="3" android:versionName="1.0">
        <supports-screens android:xlargeScreens="true"/>
        <uses-permission android:name="android.permission.INTERNET"/>
        <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
        <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
        <uses-sdk android:minSdkVersion="4" android:targetSdkVersion="29"/>
        <application android:label="RuneSlice" android:name="android.support.multidex.MultiDexApplication" android:icon="@mipmap/runeslice" android:fadeScrollbars="false" android:debuggable="false">
                <activity android:name="javafxports.android.FXActivity" android:label="RuneSlice" android:configChanges="orientation|screenSize">
                        <meta-data android:name="main.class" android:value="src.sample.Main"/>
                        <meta-data android:name="debug.port" android:value="0"/>
                        <intent-filter>
                                <action android:name="android.intent.action.MAIN"/>
                                <category android:name="android.intent.category.LAUNCHER"/>
                        </intent-filter>
                </activity>

                <activity android:name="com.gluonhq.impl.charm.down.plugins.android.PermissionRequestActivity" />
        </application>
</manifest>

EDIT: Following testing with GraalVM version of an APK, problem still persists. https://www.youtube.com/watch?v=P2FSfrm6Km4