Description of problem:
Fedora 23 . 
Opened fritzing and trying to open an example :
File -> Open Example -> Arduino -> Digital -> Output -> Blink

When slider moves just to 49% window disappears .
I tried this procedure on another machine (clean) installed from scratch - the same simptom. 

Version-Release number of selected component:
fritzing-0.9.2b-1.fc23

Additional info:
reporter:       libreport-2.6.3
backtrace_rating: 4
cmdline:        Fritzing
crash_function: QBasicAtomicInt::ref
executable:     /usr/bin/Fritzing
global_pid:     6888
kernel:         4.2.7-300.fc23.x86_64
runlevel:       N 5
type:           CCpp
uid:            1001

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 QBasicAtomicInt::ref at /usr/include/QtCore/qatomic_x86_64.h:121
 #1 QHash<QString, unz64_file_pos_s>::QHash at /usr/include/QtCore/qhash.h:281
 #2 QuaZipPrivate::QuaZipPrivate at /usr/src/debug/quazip-0.7.1/quazip/quazip.cpp:108
 #3 QuaZip::QuaZip at /usr/src/debug/quazip-0.7.1/quazip/quazip.cpp:199
 #4 FolderUtils::unzipTo at src/utils/folderutils.cpp:424
 #5 MainWindow::loadBundledSketch at src/mainwindow/mainwindow.cpp:1410
 #6 MainWindow::loadWhich at src/mainwindow/mainwindow_menu.cpp:349
 #7 MainWindow::openRecentOrExampleFile at src/mainwindow/mainwindow_menu.cpp:2658
 #9 MainWindow::qt_static_metacall at release/moc_mainwindow.cpp:1188
 #10 QMetaObject::activate at kernel/qobject.cpp:3713