Restore GTK integration after removing KDE

kde

Solution 1:

Hit Ctrl+Alt+T to open terminal and run:

sudo apt-get remove gtk2-engines-oxygen gtk3-engines-oxygen

Appearently kubuntu-desktop has installed a GTK theme so that GNOME/GTK apps look consistent with KDE/QT ones. I wonder why debfoster kubuntu-desktop- didn't remove it though :-)

Solution 2:

Found the answer. Just remove oxygen-gtk theme from /usr/share/themes.

cd /usr/share/themes
sudo rm -rf oxygen-gtk/

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