Re comment #9: didn't work for me w/Scribus 1.50SVN Trunk:
$ env | grep QT QT_IM_MODULE=ibus QT_QPA_PLATFORMTHEME= QT4_IM_MODULE=ibus
$ sudo apt-get remove appmenu-qt5
does work. However I wonder what affect it might have on indicator-appmenu:
$ apt-cache rdepends appmenu-qt5 appmenu-qt5 Reverse Depends: appmenu-qt5:i386 indicator-appmenu
Re comment #9: didn't work for me w/Scribus 1.50SVN Trunk:
$ env | grep QT PLATFORMTHEME=
QT_IM_MODULE=ibus
QT_QPA_
QT4_IM_MODULE=ibus
$ sudo apt-get remove appmenu-qt5
does work. However I wonder what affect it might have on indicator-appmenu:
$ apt-cache rdepends appmenu-qt5
appmenu-qt5
Reverse Depends:
appmenu-qt5:i386
indicator-appmenu