On the Stream Isolation page, there is a list of applications that are pre-configured to use uwt wrappers. Follow the instructions below in order to disable this.
The following instructions permanently deactivate all uwt wrappers and remove stream isolation for uwt wrapped applications system-wide. Consequently, all uwt wrapped applications revert to the default system networking configuration.
If you want more granular control of uwt wrapper deactivation, see Stream_Isolation#Deactivate_uwt_Stream_Isolation_Wrapper.
Open /etc/uwt.d/50_user.conf in an editor with root rights.
If you are using a graphical Whonix or Qubes-Whonix, run.
kdesudo kwrite /etc/uwt.d/50_user.conf
If you are using a terminal-only Whonix, run.
sudo nano /etc/uwt.d/50_user.conf
Save and exit.