QFontconfigDatabase::addApplicationFont is called twice for the same font

1   QFontconfigDatabase::addApplicationFont  qfontconfigdatabase.cpp    822  0x7fffeed288c4 
2   registerFont                             qfontdatabase.cpp          1042 0x7ffff77cce62 
3   QFontDatabasePrivate::addAppFont         qfontdatabase.cpp          2458 0x7ffff77cce62 
4   QFontDatabase::addApplicationFont        qfontdatabase.cpp          2507 0x7ffff77cfa3e 
5   QQuickFontLoader::setSource              qquickfontloader.cpp       253  0x7fffc7aa5c88 
6   QQuickFontLoader::qt_static_metacall     moc_qquickfontloader_p.cpp 161  0x7fffc7aa6105 
7   QQmlPropertyData::writeProperty          qqmlpropertycache_p.h      346  0x7ffff717f4ba 
8   QQmlObjectCreator::setPropertyValue      qqmlobjectcreator.cpp      450  0x7ffff71fb676 
9   QQmlObjectCreator::setPropertyBinding    qqmlobjectcreator.cpp      1086 0x7ffff71fd9df 
10  QQmlObjectCreator::setupBindings         qqmlobjectcreator.cpp      777  0x7ffff71ff96e 
11  QQmlObjectCreator::populateInstance      qqmlobjectcreator.cpp      1463 0x7ffff71fc986 
12  QQmlObjectCreator::createInstance        qqmlobjectcreator.cpp      1301 0x7ffff71fd05e 
13  QQmlObjectCreator::setPropertyBinding    qqmlobjectcreator.cpp      825  0x7ffff71ff110 
14  QQmlObjectCreator::setupBindings         qqmlobjectcreator.cpp      777  0x7ffff71ff96e 
15  QQmlObjectCreator::populateInstance      qqmlobjectcreator.cpp      1463 0x7ffff71fc986 
16  QQmlObjectCreator::createInstance        qqmlobjectcreator.cpp      1301 0x7ffff71fd05e 
17  QQmlObjectCreator::create                qqmlobjectcreator.cpp      203  0x7ffff720038e 
18  QQmlComponentPrivate::beginCreate        qqmlcomponent.cpp          871  0x7ffff7182f2b 
19  QQmlComponent::create                    qqmlcomponent.cpp          783  0x7ffff7180a89 
20  QQmlApplicationEnginePrivate::finishLoad qqmlapplicationengine.cpp  134  0x7ffff71f20eb 
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1   QFontconfigDatabase::addApplicationFont qfontconfigdatabase.cpp 822  0x7fffeed288c4 
2   registerFont                            qfontdatabase.cpp       1042 0x7ffff77c9f9c 
3   initializeDb                            qfontdatabase.cpp       910  0x7ffff77c9f9c 
4   QFontDatabase::findFont                 qfontdatabase.cpp       2664 0x7ffff77cde15 
5   QFontDatabase::load                     qfontdatabase.cpp       2829 0x7ffff77ce926 
6   QFontPrivate::engineForScript           qfont.cpp               217  0x7ffff77a5c1a 
7   QTextEngine::fontEngine                 qtextengine.cpp         2530 0x7ffff77d63e3 
8   QTextEngine::shapeText                  qtextengine.cpp         1392 0x7ffff77d7e7f 
9   QTextEngine::shape                      qtextengine.cpp         1988 0x7ffff77d8cdc 
10  QTextLine::layout_helper                qtextlayout.cpp         1836 0x7ffff77eafc7 
11  QTextLine::setLineWidth                 qtextlayout.cpp         1596 0x7ffff77ebc9b 
12  QQuickTextPrivate::setLineGeometry      qquicktext.cpp          1165 0x7fffc7bb377b 
13  QQuickTextPrivate::setupTextLayout      qquicktext.cpp          792  0x7fffc7bb4bbd 
14  QQuickTextPrivate::updateSize           qquicktext.cpp          408  0x7fffc7bb67bc 
15  QQuickTextPrivate::updateLayout         qquicktext.cpp          290  0x7fffc7bb7875 
16  QQuickText::componentComplete           qquicktext.cpp          2694 0x7fffc7bb8b93 
17  QQmlObjectCreator::finalize             qqmlobjectcreator.cpp   1366 0x7ffff71fa962 
18  QQmlComponentPrivate::complete          qqmlcomponent.cpp       923  0x7ffff7180b87 
19  QQmlComponentPrivate::completeCreate    qqmlcomponent.cpp       959  0x7ffff7180ca2 
20  QQmlComponent::create                   qqmlcomponent.cpp       785  0x7ffff7180a9a 
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