Description of problem: Qt5 applications don't look uniform in GTK+ environments anymore due to a missing QGtkStyle plugin. QGtkStyle was removed from qt5-base in 5.7.0 due to lack of maintainers, as Google told me. Since then, it was re-added to qt5-qtstyleplugins in this commit https://github.com/qt/qtstyleplugins/commit/7b11d50ac5eb0f9f069d0c73ada5796eac584217 but the package shipped in Fedora 25 is missing it. Of course I'm not talking about GNOME, there's adwaita-qt for it, but all other GTK+ desktop spins (MATE, Xfce, Cinnamon and LXDE) will get a Qt5 application, like VirtualBox, showing the default Qt5 look instead of blending in with whatever colors and looks the other GTK+ applications happen to sport. This will also affect any GNOME user who is bold enough to escape from Adwaita. Version-Release number of selected component (if applicable): qt5-qtstyleplugins-5.0.0-8.fc25.x86_64 How reproducible: Always Steps to Reproduce: 1. Install qt5-qtstyleplugins 2. Expect to get uniform look for Qt/GTK+ 2. It doesn't happen Actual results: QGtkStyle is missing, Qt5 applications are ugly Expected results: Qt5 applications must be pretty Additional info: You still need to export QT_QPA_PLATFORMTHEME=gtk2 for it to take effect, I don't know if this can be managed by the package itself or it must be a per-user/per-DE setting only.
No new (qtstyleplugins) release has been made that includes that... yet, as far as I know
qt5-qtstyleplugins-5.0.0-9.fc25 has been pushed to the Fedora 25 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-fed127a12d
qt5-qtstyleplugins-5.0.0-9.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report.