I tried to copy & paste a phone number from LibreOffice Calc, into the dialing field.  I copied it from the "formula bar" in Calc, and used my mouse wheel to paste - by clicking it.  Yes, my mouse wheel clicks.  I think, but am not positive, that it's the same as clicking both left and right mouse buttons on other mice.

Application: SFLphone KDE Client (sflphone-client-kde), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xb7791740 (LWP 15362))]

Thread 2 (Thread 0xb4e01b40 (LWP 15393)):
#0 0x00e32416 in __kernel_vsyscall ()
#1 0x088b2460 in poll () from /lib/i386-linux-gnu/libc.so.6
#2 0x01cd8a3b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3 0x01ccb06e in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4 0x01ccb1c1 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5 0x047dcde7 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#6 0x047a86ad in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#7 0x047a8949 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#8 0x04691a1c in QThread::exec() () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#9 0x04785cfd in ?? () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#10 0x04694eb0 in ?? () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#11 0x00ec6d4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0x088c0bae in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb7791740 (LWP 15362)):
[KCrash Handler]
#7 0x046e1bd0 in QString::left(int) const () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#8 0x00b8f44d in NumberCompletionModel::getRange(QMap<QString, PhoneDirectoryModel::NumberWrapper*>, QString const&, QSet<PhoneNumber*>&) () from /usr/lib/libqtsflphone.so.1.3.0
#9 0x00b8fab1 in NumberCompletionModel::locateNameRange(QString const&, QSet<PhoneNumber*>&) () from /usr/lib/libqtsflphone.so.1.3.0
#10 0x00b8fbac in NumberCompletionModel::updateModel() () from /usr/lib/libqtsflphone.so.1.3.0
#11 0x00b8ff88 in NumberCompletionModel::setPrefix(QString const&) () from /usr/lib/libqtsflphone.so.1.3.0
#12 0x00bb67d4 in ?? () from /usr/lib/libqtsflphone.so.1.3.0
#13 0x047c0bb1 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#14 0x00bb0165 in Call::dialNumberChanged(QString const&) () from /usr/lib/libqtsflphone.so.1.3.0
#15 0x00b29209 in Call::setDialNumber(QString const&) () from /usr/lib/libqtsflphone.so.1.3.0
#16 0x080a09ae in ?? ()
#17 0x047c0bb1 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#18 0x014a04b5 in QLineEdit::textChanged(QString const&) () from /usr/lib/i386-linux-gnu/libQtGui.so.4
#19 0x014a0877 in ?? () from /usr/lib/i386-linux-gnu/libQtGui.so.4
#20 0x047c0bb1 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#21 0x01751dc5 in QLineControl::textChanged(QString const&) () from /usr/lib/i386-linux-gnu/libQtGui.so.4
#22 0x014a5b3a in QLineControl::finishChange(int, bool, bool) () from /usr/lib/i386-linux-gnu/libQtGui.so.4
#23 0x014a79c5 in QLineControl::insert(QString const&) () from /usr/lib/i386-linux-gnu/libQtGui.so.4
#24 0x0149fb9c in QLineEdit::insert(QString const&) () from /usr/lib/i386-linux-gnu/libQtGui.so.4
#25 0x014a0210 in QLineEdit::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/i386-linux-gnu/libQtGui.so.4
#26 0x003d25b4 in KLineEdit::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/libkdeui.so.5
#27 0x0106fffc in QWidget::event(QEvent*) () from /usr/lib/i386-linux-gnu/libQtGui.so.4
#28 0x0149e60b in QLineEdit::event(QEvent*) () from /usr/lib/i386-linux-gnu/libQtGui.so.4
#29 0x003d1de2 in KLineEdit::event(QEvent*) () from /usr/lib/libkdeui.so.5
#30 0x01015df4 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQtGui.so.4
#31 0x0101be74 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQtGui.so.4
#32 0x002fd161 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#33 0x0807c440 in _start ()