I should correct myself. QBitTorrent (Qt5) works as well. It is LyX (Qt5) that does not use the GTK file chooser or use GTK button order.
> Is this a bug in Qt5, in GTK3, in Qt5-style-plugins or in XFCE or in Xubuntu's config files?
Should now read as:
Is this a bug in Qt5, in GTK3, in Qt5-style-plugins, in certain Qt5 apps like Lyx or in XFCE or in Xubuntu's config files?
I should correct myself. QBitTorrent (Qt5) works as well. It is LyX (Qt5) that does not use the GTK file chooser or use GTK button order.
> Is this a bug in Qt5, in GTK3, in Qt5-style-plugins or in XFCE or in Xubuntu's config files?
Should now read as:
Is this a bug in Qt5, in GTK3, in Qt5-style-plugins, in certain Qt5 apps like Lyx or in XFCE or in Xubuntu's config files?