Comment # 17 on bug 1149986 from Xu Zhao

(In reply to Marcel Kuehlhorn from comment #15)
> It seems we're still at a stalemate between working GTK <-> Qt themeing and
> working GTK integration in Telegram: completely removing the patch from
> libqt5-qtbase predictably brought back bug 1002900, replacing it with a
> patch that adds GTK2 second also results in QT apps on GTK falling back to
> the GNOME default theme...
> 
> https://build.opensuse.org/package/show/home:tux93:branches:KDE:Qt:5.13/
> libqt5-qtbase

Also, what do you mean by "QT apps on GTK falling back to the GNOME default
theme"? My understanding of setting GTK3 as the first will result in QT apps on
GTK3 falling back to GTK3 theme, which is correct behavior.