I'm using yakuake frameworks branch from git on the latest released plasma version with latest released frameworks.

Usually I want to copy output and select it to copy it. Left click + scrolling up causes a crash.

Reproducible: Sometimes

Steps to Reproduce:
1. Generate a lot of output
2. Use the mouse to select a lot of text (left click + push scroll wheel)
3. Crash


Expected Results:  
Application: Yakuake (yakuake), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f3afa5dd7c0 (LWP 12268))]

Thread 2 (Thread 0x7f3ae95e2700 (LWP 12270)):
#0  0x00007f3af5e67c8d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f3af43b5a72 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007f3af43b7627 in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007f3aeb769b99 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f3af64d27d2 in ?? () from /usr/lib64/libQt5Core.so.5
#5  0x00007f3af2c922fc in start_thread (arg=0x7f3ae95e2700) at pthread_create.c:333
#6  0x00007f3af5e7095d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f3afa5dd7c0 (LWP 12268)):
[KCrash Handler]
#6  0x00007f3adc5fe64d in Konsole::TerminalDisplay::charClass(Konsole::Character const&) const () from /usr/lib64/libkonsoleprivate.so.15
#7  0x00007f3adc6021e8 in Konsole::TerminalDisplay::findWordEnd(QPoint const&) () from /usr/lib64/libkonsoleprivate.so.15
#8  0x00007f3adc6031ef in Konsole::TerminalDisplay::extendSelection(QPoint const&) () from /usr/lib64/libkonsoleprivate.so.15
#9  0x00007f3adc5fff11 in Konsole::TerminalDisplay::mouseMoveEvent(QMouseEvent*) () from /usr/lib64/libkonsoleprivate.so.15
#10 0x00007f3af6f00f48 in QWidget::event(QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#11 0x00007f3adc60757a in Konsole::TerminalDisplay::event(QEvent*) () from /usr/lib64/libkonsoleprivate.so.15
#12 0x00007f3af6ebe2ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#13 0x00007f3af6ec41d9 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#14 0x00007f3af667895c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
#15 0x00007f3af6ec2ab2 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib64/libQt5Widgets.so.5
#16 0x00007f3af6f1c03d in ?? () from /usr/lib64/libQt5Widgets.so.5
#17 0x00007f3af6f1e3b3 in ?? () from /usr/lib64/libQt5Widgets.so.5
#18 0x00007f3af6ebe2ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#19 0x00007f3af6ec3700 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#20 0x00007f3af667895c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
#21 0x00007f3af69a2881 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /usr/lib64/libQt5Gui.so.5
#22 0x00007f3af69a461d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib64/libQt5Gui.so.5
#23 0x00007f3af6989c83 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Gui.so.5
#24 0x00007f3aeb795bd0 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#25 0x00007f3af143bf14 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#26 0x00007f3af143c1f0 in ?? () from /usr/lib64/libglib-2.0.so.0
#27 0x00007f3af143c29c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#28 0x00007f3af66c400f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#29 0x00007f3af6677662 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#30 0x00007f3af667e784 in QCoreApplication::exec() () from /usr/lib64/libQt5Core.so.5
#31 0x0000000000414502 in ?? ()
#32 0x00007f3af5dab790 in __libc_start_main (main=0x413e40, argc=1, argv=0x7ffc34c96608, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc34c965f8) at libc-start.c:289
#33 0x0000000000414589 in _start ()