To correct flatpac installed apps run:
To make QT apps use GTK theme run:
Than
You will need to logout for it to take effect.
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flatpak install flathub org.gtk.Gtk3theme.ArcTo make QT apps use GTK theme run:
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sudo apt install qt5-style-pluginsThan
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echo "export QT_QPA_PLATFORMTHEME=gtk2" >> ~/.profileYou will need to logout for it to take effect.