SoapUI sending xml http payload in Unicode format instead of UTF-8 on Windows

There is a bug in SoapUI which is pretty old and I recently upgraded to 5.0.0 and hoped it would be fixed there but apparently not so here it goes.

I believe the bug is the same explained here https://forum.soapui.org/viewtopic.php?t=22811

When performing a POST HTTP Request with an xml message as the request body containing the following message

<?xml version="1.0" encoding="UTF-8"?>
<request>

 <someTag>äöå</someTag>
</requestt>

After doing some snooping using wireshark I can see that from a SoapUI in a Linux machine the 3 Characters come out as "c3a4c3b6c3a5" which is the correct however when performing the exact same request (Using the same project xml) from a SoapUI in a windows machine, the output is "a4f6a5" which looks like Unicode to me.

This is very annoying as it makes testing from the windows machines impossible when having UTF-8 character payloads.

Is there any chance we can have this fixed anytime soon?