JavaFX 11 / Building Artifact Fails

I've started a new JavaFX Project from the IntelliJ template and linked the previous downloaded OpenJFX JDK as a library.

The project executes correctly but when I try to build the pre-configured artifact, I get an Error

Error: Java FX Packager:
BUILD FAILED
C:/[temp]/build.xml:3: Problem: failed to create task or type javafx:come.sun.javafx.tools.ant:fileset
Cause: The name is undefined
[... Various Actions to perform]

I did nothing but trying to build the standard Java FX template from IntelliJ.
Are there any further steps required besides adding the OpenJFX SDK as a library to the project?
Why does it execute perfectly but not build the artifacts?

Thanks.

*PS I also tried working with Jigsaw modules but it seems this feature is still not supported by IntelliJ.