=================================================================
==12262==ERROR: AddressSanitizer: SEGV on unknown address 0x7f9755800167 (pc 0x7f980148dcfa bp 0x000000000000 sp 0x7fff250c8420 T0)
==12262==The signal is caused by a READ memory access.
    #0 0x7f980148dcf9 in QComboBox::showPopup() widgets/qcombobox.cpp:2832
    #1 0x7f980148e39d in QComboBoxPrivate::showPopupFromMouseEvent(QMouseEvent*) widgets/qcombobox.cpp:3163
    #2 0x7f98013cd1d0 in QWidget::event(QEvent*) kernel/qwidget.cpp:8959
    #3 0x7f980148a055 in QComboBox::event(QEvent*) widgets/qcombobox.cpp:3127
    #4 0x7f980138e92b in QApplicationPrivate::notify_helper(QObject*, QEvent*) kernel/qapplication.cpp:3700
    #5 0x7f98013967fe in QApplication::notify(QObject*, QEvent*) kernel/qapplication.cpp:3160
    #6 0x7f97f80d3347 in QCoreApplication::notifyInternal2(QObject*, QEvent*) kernel/qcoreapplication.cpp:1088
    #7 0x7f9801395029 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) kernel/qapplication.cpp:2646
    #8 0x7f98013e6070 in QWidgetWindow::handleMouseEvent(QMouseEvent*) kernel/qwidgetwindow.cpp:671
    #9 0x7f98013e8d0a in QWidgetWindow::event(QEvent*) kernel/qwidgetwindow.cpp:289
    #10 0x7f980138e92b in QApplicationPrivate::notify_helper(QObject*, QEvent*) kernel/qapplication.cpp:3700
    #11 0x7f9801395b0f in QApplication::notify(QObject*, QEvent*) kernel/qapplication.cpp:3446
    #12 0x7f97f80d3347 in QCoreApplication::notifyInternal2(QObject*, QEvent*) kernel/qcoreapplication.cpp:1088
    #13 0x7f97f9199459 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) kernel/qguiapplication.cpp:2107
    #14 0x7f97f919a9a4 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) kernel/qguiapplication.cpp:1842
    #15 0x7f97f9177f9a in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) kernel/qwindowsysteminterface.cpp:1151
    #16 0x7f97e8d14ce9 in xcbSourceDispatch(_GSource*, int (*)(void*), void*) (/home/antonio/Qt/5.12.8/gcc_64/plugins/platforms/../../lib/libQt5XcbQpa.so.5+0x6bce9)
    #17 0x7f97ef3f1416 in g_main_context_dispatch (/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x4c416)
    #18 0x7f97ef3f164f  (/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x4c64f)
    #19 0x7f97ef3f16db in g_main_context_iteration (/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x4c6db)
    #20 0x7f97f812a75e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) kernel/qeventdispatcher_glib.cpp:422
    #21 0x7f97f80d1c09 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) kernel/qeventloop.cpp:225
    #22 0x7f97f80da64f in QCoreApplication::exec() kernel/qcoreapplication.cpp:1389
    #23 0x55dcc4e4c88f in Ms::runApplication(int&, char**) /media/antonio/Mint0/MuseScore_addresssanitizer/mscore/musescore.cpp:7767
    #24 0x55dcc4d7d074 in main /media/antonio/Mint0/MuseScore_addresssanitizer/main/main.cpp:92
    #25 0x7f97f67ccb96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #26 0x55dcc4d7cd49 in _start (/usr/local/bin/mscore+0x7063d49)