Comment 2 for bug 1306472

Sadly, today I still didn't have time to look into this in detail, but it's as I already mentioned in the e-mail - your prognosis might be somewhat correct. appmenu-qt5 'inherits' from existing platformthemes, i.e. GnomeTheme and KdeTheme classes - theoretically it should normally return the theme name as if it was the default gnome theme. But there might be something going on because there's a separate gtk platformtheme plugin that's used by default now in Qt 5.2. But I have to look into that finally.

Thanks again for reporting!