Running *.jnlp file on Raspberry Pi 3 B+

The last reply to this thread was 3/8/2019 and today is 6/3/2021. I was wondering if anyone knows if this issue with the client serial support module has been resolved by version 7.9.16.

I have the client serial support module installed, I cannot uninstall it as it is critical to other projects, and I would very much like to use a Rasberry Pi hooked to a TV as a client.