Description of problem:
1. add an new c++ class to an project.
2. press the seach button to select the path for the files.
now qt creator crash.

The crash will only happend on wayland mode.
Running under X11 all work as aspected.

Version-Release number of selected component:
qt-creator-4.1.0-0.3.rc1.fc25

Additional info:
reporter:       libreport-2.8.0
backtrace_rating: 4
cmdline:        qtcreator
crash_function: wl_subcompositor_interface
executable:     /usr/bin/qtcreator
global_pid:     14270
kernel:         4.8.11-300.fc25.x86_64
pkg_fingerprint: 4089 D8F2 FDB1 9C98
pkg_vendor:     Fedora Project
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 wl_subcompositor_interface
 #1 XChangeProperty at ChProp.c:46
 #2 XSetTransientForHint at SetHints.c:286
 #3 QGtk3Dialog::show(QFlags<Qt::WindowType>, Qt::WindowModality, QWindow*) at qgtk3dialoghelpers.cpp:133
 #4 QGtk3FileDialogHelper::show(QFlags<Qt::WindowType>, Qt::WindowModality, QWindow*) at qgtk3dialoghelpers.cpp:258
 #5 QDialogPrivate::setNativeDialogVisible(bool) at dialogs/qdialog.cpp:140
 #6 QFileDialog::setVisible(bool) at dialogs/qfiledialog.cpp:846
 #7 QDialog::exec() at dialogs/qdialog.cpp:544
 #8 QFileDialog::getExistingDirectoryUrl(QWidget*, QString const&, QUrl const&, QFlags<QFileDialog::Option>, QStringList const&) at dialogs/qfiledialog.cpp:2496
 #9 QFileDialog::getExistingDirectory(QWidget*, QString const&, QString const&, QFlags<QFileDialog::Option>) at dialogs/qfiledialog.cpp:2450