"Toolkit already initialized" error with OpenJDK 11

[marcel Austenfeld]

First of all congratulation to the new release and thank you for the hard work on JavaFX.
 
 
I have a problem with JavaFX which in my case is embedded in a Rich Client Platform of Eclipse.
 
I integrated several SWT FXCanvas (some with SwingNode panels as a SWT_AWT replacement) into my app.
 
This works fine in Java 8 which my current release depends on.
 
However in Java 11 after the second panel is initialized at startup I get the following error:
 
"Caused by: java.lang.IllegalStateException: Toolkit already initialized"
 
Is there a new option available to avoid a new initialization of the toolkit if several FXCanvas are embedded in an application?
Or do you now any changes since Java 8 which could the cause of such an exception?
 
 
Thanks in advance for any help.