Created attachment 118287 [details]
Screenshot of widget which triggers crash

Running libreoffice-5.0.1.2-1.1.x86_64 on Plasma 5 / openSUSE Tumbleweed.

Steps to reproduce:

1. Create new presentation in impress
2. Click on a paragraph outline
3. In the properties panel, expand the Line section
4. Click on the width wiget 
5. Select a width

The backtrace is

Program received signal SIGSEGV, Segmentation fault.
0x00007f22c7206290 in vcl::Window::ImplGrabFocus(unsigned short) () from /usr/lib64/libreoffice/program/libmergedlo.so
(gdb) bt
#0  0x00007f22c7206290 in vcl::Window::ImplGrabFocus(unsigned short) () from /usr/lib64/libreoffice/program/libmergedlo.so
#1  0x00007f22c7206838 in vcl::Window::ImplGrabFocus(unsigned short) () from /usr/lib64/libreoffice/program/libmergedlo.so
#2  0x00007f22c7251d64 in vcl::Window::dispose() () from /usr/lib64/libreoffice/program/libmergedlo.so
#3  0x00007f22c72793d0 in Edit::dispose() () from /usr/lib64/libreoffice/program/libmergedlo.so
#4  0x00007f22c72b497f in SpinField::dispose() () from /usr/lib64/libreoffice/program/libmergedlo.so
#5  0x00007f22c69b76cd in svx::sidebar::LineWidthControl::dispose() () from /usr/lib64/libreoffice/program/libmergedlo.so
#6  0x00007f22c69c0690 in svx::sidebar::Popup::PopupModeEndHandler(void*) () from /usr/lib64/libreoffice/program/libmergedlo.so
#7  0x00007f22c71e4c77 in FloatingWindow::ImplEndPopupModeHdl(void*) () from /usr/lib64/libreoffice/program/libmergedlo.so
#8  0x00007f22c72592db in ImplWindowFrameProc(vcl::Window*, SalFrame*, unsigned short, void const*) () from /usr/lib64/libreoffice/program/libmergedlo.so
#9  0x00007f22c74a1666 in SalGenericDisplay::DispatchInternalEvent() () from /usr/lib64/libreoffice/program/libmergedlo.so
#10 0x00007f22b5030690 in KDEXLib::timeoutActivated() () from /usr/lib64/libreoffice/program/libvclplug_kde4lo.so
#11 0x00007f22b50326c8 in KDEXLib::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib64/libreoffice/program/libvclplug_kde4lo.so
#12 0x00007f22b2d2eaa1 in QObject::event (this=0x19d9030, e=<optimized out>) at kernel/qobject.cpp:1231
#13 0x00007f22b3254f1c in QApplicationPrivate::notify_helper (this=this@entry=0x1a0b390, receiver=receiver@entry=0x19d9030, e=e@entry=0x433d020) at kernel/qapplication.cpp:4565
#14 0x00007f22b325b9ec in QApplication::notify (this=0x19fb760, receiver=0x19d9030, e=0x433d020) at kernel/qapplication.cpp:4351
#15 0x00007f22b446563a in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#16 0x00007f22b2d15a1d in QCoreApplication::notifyInternal (this=0x19fb760, receiver=receiver@entry=0x19d9030, event=event@entry=0x433d020) at kernel/qcoreapplication.cpp:955
#17 0x00007f22b2d18e4e in sendEvent (event=0x433d020, receiver=0x19d9030) at kernel/qcoreapplication.h:231
#18 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x19d17c0) at kernel/qcoreapplication.cpp:1579
#19 0x00007f22b2d19123 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1472
#20 0x00007f22b2d440de in sendPostedEvents () at kernel/qcoreapplication.h:236
#21 postEventSourceDispatch (s=0x1a0ac20) at kernel/qeventdispatcher_glib.cpp:300
#22 0x00007f22ba7a7cc7 in g_main_dispatch (context=0x1a06cc0) at gmain.c:3122
#23 g_main_context_dispatch (context=context@entry=0x1a06cc0) at gmain.c:3737
#24 0x00007f22ba7a7ef8 in g_main_context_iterate (context=context@entry=0x1a06cc0, block=block@entry=0, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3808
#25 0x00007f22ba7a7f9c in g_main_context_iteration (context=0x1a06cc0, may_block=may_block@entry=0) at gmain.c:3869
#26 0x00007f22b2d4424e in QEventDispatcherGlib::processEvents (this=0x199fc00, flags=...) at kernel/qeventdispatcher_glib.cpp:450
#27 0x00007f22b32f8946 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#28 0x00007f22b5030617 in KDEXLib::processYield(bool, bool) () from /usr/lib64/libreoffice/program/libvclplug_kde4lo.so
#29 0x00007f22b5032198 in KDEXLib::Yield(bool, bool) () from /usr/lib64/libreoffice/program/libvclplug_kde4lo.so
#30 0x00007f22c7436363 in Application::Yield() () from /usr/lib64/libreoffice/program/libmergedlo.so
#31 0x00007f22c74363e5 in Application::Execute() () from /usr/lib64/libreoffice/program/libmergedlo.so
#32 0x00007f22c65d2f2b in desktop::Desktop::Main() () from /usr/lib64/libreoffice/program/libmergedlo.so
#33 0x00007f22c743b3f1 in ImplSVMain() () from /usr/lib64/libreoffice/program/libmergedlo.so
#34 0x00007f22c743b432 in SVMain() () from /usr/lib64/libreoffice/program/libmergedlo.so
#35 0x00007f22c65f011f in soffice_main () from /usr/lib64/libreoffice/program/libmergedlo.so
#36 0x000000000040071b in main ()