(gdb) bt
#0  0x00007ffff698de90 in __lll_lock_wait () at /lib64/libpthread.so.0
#1  0x00007ffff6986753 in pthread_mutex_lock () at /lib64/libpthread.so.0
#2  0x00000000006a658f in __gthread_mutex_lock (__mutex=0x20f3810) at /usr/include/c++/10/x86_64-suse-linux/bits/gthr-default.h:749
#3  std::mutex::lock() (this=0x20f3810) at /usr/include/c++/10/bits/std_mutex.h:100
#4  std::lock_guard<std::mutex>::lock_guard(std::mutex&) (__m=..., this=0x7fffffffa5e0) at /usr/include/c++/10/bits/std_mutex.h:159
#5  util::SequentialTaskQueue::isIdle() const (this=0x20f37d0) at ../libs/SequentialTaskQueue.h:72
#6  util::SequentialTaskQueue::enqueue(std::function<void ()> const&) (task=..., this=0x20f37d0) at ../libs/SequentialTaskQueue.h:44
#7  ui::SoundShaderPreview::loadFileDurationAsync(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
    (this=this@entry=0x20f3400, soundFile="sound/voices/builders/builder2/tdm_ai_builder2_alertdown_to_idle_seen_suspicious_05.ogg")
    at uimanager/SoundShaderPreview.cpp:292
#8  0x00000000006a67d7 in ui::SoundShaderPreview::getDurationOrPlaceholder(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
    (this=this@entry=0x20f3400, soundFile="sound/voices/builders/builder2/tdm_ai_builder2_alertdown_to_idle_seen_suspicious_05.ogg")
    at uimanager/SoundShaderPreview.cpp:286
#9  0x00000000006a6ed9 in ui::SoundShaderPreview::update() (this=this@entry=0x20f3400) at /usr/include/wx-3.0/wx/string.h:3488
#10 0x00000000006a884a in ui::SoundShaderPreview::setSoundShader(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) (this=0x20f3400, soundShader="tdm_ai_builder2_alertdown_to_idle_seen_suspicious") at uimanager/SoundShaderPreview.cpp:122
#11 0x0000000000672e15 in ui::SoundChooser::handleSelectionChange() (this=0x2348720) at uimanager/SoundChooser.cpp:273
#12 0x0000000000673063 in ui::SoundChooser::_onSelectionChange(wxDataViewEvent&) (this=<optimized out>, ev=...)
    at uimanager/SoundChooser.cpp:278
#13 0x00007ffff70e80ce in wxEvtHandler::ProcessEventIfMatchesId(wxEventTableEntryBase const&, wxEvtHandler*, wxEvent&) ()
    at /usr/lib64/libwx_baseu-suse.so.3.0.4
#14 0x00007ffff70e83ef in wxEvtHandler::SearchDynamicEventTable(wxEvent&) () at /usr/lib64/libwx_baseu-suse.so.3.0.4
#15 0x00007ffff70e8420 in wxEvtHandler::TryHereOnly(wxEvent&) () at /usr/lib64/libwx_baseu-suse.so.3.0.4
#16 0x00007ffff70e84db in wxEvtHandler::ProcessEventLocally(wxEvent&) () at /usr/lib64/libwx_baseu-suse.so.3.0.4