Java 11 issue (illegal reflective access)

[wkbrd]

When using the latest release with jdk11, I encounter the following warning during execution of the software:

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by tcl.lang.process.JavaProcess (file:/PATH/TO/jtcl-2.8.0.jar) to field java.lang.ProcessImpl.pid
WARNING: Please consider reporting this to the maintainers of tcl.lang.process.JavaProcess
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

Is there a fix to this issue?