Comment 4 for bug 2047705

Hey there, thanks for the bug report.

@Simon, First I'm lowering the severity because I don't think it's breaking systems in a way that justify the important you set

> As it turns out, this is because the /etc directory is given higher priority than /etc/xdg/xdg-Lubuntu when searching for XDG configuration files

I don't think that's true, it's iterating over XDG_CONFIG_DIRS and stops to the first match which should be etc/xdg/xdg-$desktopsession

I've just tried under a wmaker session (makes it easier to confirm the behaviour of gtk because in modern desktops the theme default can be overwritten from xsettings or portal) when I copied the file to /etc/xdg/xdg-wmaker/gtk-3.0/settings.ini and edited the theme to Adwaita and confirmed restarting gtk3-demo it was using Adwaita instead of Yaru

I would also advice to not do what you did in lxqt-session, if I understand the change correctly you are creating a local user configuration which isn't likely to stick around without the user knowing about it and which isn't desktop specific so will create problems for the users if they log into another desktop environment later on...