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https://bugreports.qt.io/browse/QTCREATORBUG-14838

Another user experienced a similar problem:

I was interacting with GUI when QTCreator crashed

reporter:       libreport-2.6.2
backtrace_rating: 4
cmdline:        /bin/qtcreator
crash_function: QScreen::handle() const
executable:     /usr/bin/qtcreator
global_pid:     29079
kernel:         4.1.3-200.fc22.x86_64
package:        qt-creator-3.4.2-1.fc22
reason:         qtcreator killed by SIGSEGV
runlevel:       N 5
type:           CCpp
uid:            1000

Are you using multiple monitors?

(In reply to Sandro Mani from comment #15)
> Are you using multiple monitors?

No

There is an update and a possible fix at https://bugreports.qt.io/browse/QTCREATORBUG-14838

F22 build of qt-creator-3.5.0-rc is here: https://copr.fedoraproject.org/coprs/smani/qt-creator-3.5.0-fc22/, together with https://copr.fedoraproject.org/coprs/dvratil/qt5/ the environment should be as described in the qt bug.

Another user experienced a similar problem:

Set KDE theme Breeze or Fedora Twenty Two

1. Run qtcreator
2. Tools->Options...
3. Close dialog
4. Tools->Options...
5. 100% Crash

reporter:       libreport-2.6.2
backtrace_rating: 4
cmdline:        /bin/qtcreator
crash_function: QScreen::handle() const
executable:     /usr/bin/qtcreator
global_pid:     30310
kernel:         4.1.3-200.fc22.x86_64
package:        qt-creator-3.4.2-1.fc22
reason:         qtcreator killed by SIGSEGV
runlevel:       N 5
type:           CCpp
uid:            1000

Please test with the 3.5.0 build to see whether the issue is indeed fixed there as noted in the upstream report.

First of all, Sandro many thanks for your help!
I have updated qtCreator from a given repo (qt5 update was also installed, but from normal f22 update-repo).
As far as I can see chrash is gone, and also one more bug with qt-designer and *.ui.qml(d.n. I some one have reported it) is also gone (There was a crash of qml interpreter in qt-designer).

I am not at home at the moment so I cannot provide much details, but I say that last testing version of qt creator is not affected by the problem

Since qt 5.5 has in the meantime also landed in F22, I'll shortly be pushing the just-released qt-creator 3.5.0 to F22 also, thus based on the feedback the issue should then be fixed.

qt-creator-3.5.0-1.fc22 has been submitted as an update to Fedora 22. https://bodhi.fedoraproject.org/updates/FEDORA-2015-14159

qt-creator-3.5.0-1.fc23 has been submitted as an update to Fedora 23. https://bodhi.fedoraproject.org/updates/FEDORA-2015-14160

qt-creator-3.5.0-1.fc22 has been pushed to the Fedora 22 testing repository. If problems still persist, please make note of it in this bug report.\nIf you want to test the update, you can install it with \n su -c 'yum --enablerepo=updates-testing update qt-creator'. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2015-14159

qt-creator-3.5.0-1.fc23 has been pushed to the Fedora 23 testing repository. If problems still persist, please make note of it in this bug report.\nIf you want to test the update, you can install it with \n su -c 'yum --enablerepo=updates-testing update qt-creator'. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2015-14160

(In reply to Maxim Prohorenko from comment #19)
> Another user experienced a similar problem:
> 
> Set KDE theme Breeze or Fedora Twenty Two
> 
> 1. Run qtcreator
> 2. Tools->Options...
> 3. Close dialog
> 4. Tools->Options...
> 5. 100% Crash
> 
> reporter:       libreport-2.6.2
> backtrace_rating: 4
> cmdline:        /bin/qtcreator
> crash_function: QScreen::handle() const
> executable:     /usr/bin/qtcreator
> global_pid:     30310
> kernel:         4.1.3-200.fc22.x86_64
> package:        qt-creator-3.4.2-1.fc22
> reason:         qtcreator killed by SIGSEGV
> runlevel:       N 5
> type:           CCpp
> uid:            1000

Fixed in 3.5

qt-creator-3.5.0-1.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.

qt-creator-3.5.0-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.