Description of problem:
1. Open the qbitorrent from the desktop status bar;
2. The window open, but didn't see the content of the application, try to use mouse move/click the window;
3. The crash happen.

Version-Release number of selected component:
1:qbittorrent-4.1.5-2.fc30

Additional info:
reporter:       libreport-2.10.1
backtrace_rating: 4
cmdline:        /bin/qbittorrent /tmp/mozilla_root0/MEKO-832.HD.torrent
crash_function: qGetPtrHelper<QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> > >
executable:     /usr/bin/qbittorrent
journald_cursor: s=0614f27a21d64a4299346903e56e1390;i=1cf325;b=4a5125ad8dfa4885b64608ad78c79252;m=10f9558e5;t=58e773302dfa8;x=89119bc3bb179ed8
kernel:         5.1.18-300.fc30.x86_64
rootdir:        /
runlevel:       N 5
type:           CCpp
uid:            0

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 qGetPtrHelper<QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> > > at ../../include/QtCore/../../src/corelib/global/qglobal.h:1038
 #1 QWidget::d_func at ../../include/QtWidgets/../../src/widgets/kernel/qwidget.h:131
 #2 QWidgetBackingStore::markDirtyOnScreen at kernel/qwidgetbackingstore.cpp:727
 #4 QWidgetPrivate::scrollRect at kernel/qwidgetbackingstore.cpp:999
 #5 QWidgetPrivate::scroll_sys at ../../include/QtCore/../../src/corelib/tools/qrect.h:184
 #6 QWidget::scroll at kernel/qwidget.cpp:10974
 #7 QHeaderView::setOffset at ../../include/QtWidgets/../../src/widgets/kernel/qwidget.h:412
 #8 QTreeView::scrollContentsBy at ../../include/QtWidgets/../../src/widgets/itemviews/qheaderview.h:263
 #9 QAbstractScrollAreaPrivate::_q_hslide at widgets/qabstractscrollarea.cpp:1533
 #10 QMetaObject::activate at kernel/qobject.cpp:3801