===== Fix GUI issues with KDE Plasma dark theme =====

<code bash>
mkdir ~/.config-pt
cd ~/.config
cp -rf dconf gtk-3.0 gtk-4.0 xsettingsd ~/.config-pt
</code>

  - Right-click on Menu button.
  - Click Edit Applications.
  - Select Packet Tracer.
  - Add ''%%XDG_CONFIG_HOME=/home/jas/.config-pt%%'' to Environment variables.
  - Save.