ArrayIndexOutOfBoundsException with javafxmobile-plugin ./gradlew createIpa - gluon-mobile

Question

When trying to build a test app for iOS, I ran into the exception included below. There seems to be a fix for this here https://github.com/MobiVM/robovm/issues/188, but I guess that fix somehow didn't make it into the fork I am using (excerpt from my gradle.build):
buildscript {
repositories {
jcenter()
}
dependencies {
//cc_init_javafxports check version:
// https://bitbucket.org/javafxports/javafxmobile-plugin
classpath 'org.javafxports:jfxmobile-plugin:1.3.8'
}
}
I cloned the source of javafxmobile-plugin. 2 weeks ago, version 1.3.9 was committed:
changeset: 472:8491a50f2b76
tag: 1.3.9
user: Gluon Jenkins <jenkins#gluonhq.com>
date: Thu Oct 19 16:05:18 2017 +0200
summary: new release: 1.3.9
But it has not yet been published.
Does somebody know if this javafxmobile-plugin v1.3.9 resolves the issue shown below? If not, is there a workaround, e.g. by renaming certain classes?
Caused by: org.robovm.compiler.CompilerException: java.lang.ArrayIndexOutOfBoundsException: -1
at org.robovm.compiler.plugin.lambda.LambdaPlugin.transformMethod(LambdaPlugin.java:242)
at org.robovm.compiler.plugin.lambda.LambdaPlugin.beforeClass(LambdaPlugin.java:89)
...
Caused by: java.lang.ArrayIndexOutOfBoundsException: -1
at org.robovm.compiler.plugin.lambda.LambdaClassGenerator.pushArguments(LambdaClassGenerator.java:203)
at org.robovm.compiler.plugin.lambda.LambdaClassGenerator.createForwardingMethod(LambdaClassGenerator.java:134)
at org.robovm.compiler.plugin.lambda.LambdaClassGenerator.generate(LambdaClassGenerator.java:79)
at org.robovm.compiler.plugin.lambda.LambdaPlugin.transformMethod(LambdaPlugin.java:180)
... 85 more