make all qml incubations synchronous

Seems to be a bug with 5.11 where async loading leads to strange errors,
i.e. a crash on an error report of a non existing property that actually
exists...

Check for validity in future versions!

src/imports/mvvmquick/DialogPresenter.qml

@@ -184,7 +184,7 @@ QtObject {
 		var props = config.viewProperties;
 		props["msgConfig"] = config;
 		props["msgResult"] = result;
-		var incubator = _msgBoxComponent.incubateObject(rootItem, props);
+		var incubator = _msgBoxComponent.incubateObject(rootItem, props, Qt.Synchronous);
 		return incubator.status !== Component.Error;
 	}
 
@@ -204,7 +204,7 @@ QtObject {
 		var props = config.viewProperties;
 		props["msgConfig"] = config;
 		props["msgResult"] = result;
-		var incubator = _inputComponent.incubateObject(rootItem, props);
+		var incubator = _inputComponent.incubateObject(rootItem, props, Qt.Synchronous);
 		return incubator.status !== Component.Error;
 	}
 
@@ -226,9 +226,9 @@ QtObject {
 		props["msgResult"] = result;
 		var incubator = null;
 		if(config.subType == "folder")
-			incubator = _folderComponent.incubateObject(rootItem, props);
+			incubator = _folderComponent.incubateObject(rootItem, props, Qt.Synchronous);
 		else
-			incubator = _fileComponent.incubateObject(rootItem, props);
+			incubator = _fileComponent.incubateObject(rootItem, props, Qt.Synchronous);
 		return incubator.status !== Component.Error;
 	}
 }

src/imports/mvvmquick/InputDialog.qml

@@ -38,7 +38,7 @@ MsgBoxBase {
 
 		Loader {
 			id: _inputViewLoad
-			asynchronous: true
+			asynchronous: false
 			clip: true
 			visible: _inputViewLoad.item
 

src/imports/mvvmquick/SettingsView.qml

@@ -258,11 +258,10 @@ Page {
 		onPresentOverview: _overviewComponent.incubateObject(_settingsStack, {
 																 model: model,
 																 showSections: hasSections
-																}, Qt.Asynchronous)
+															 }, Qt.Synchronous)
 		onPresentSection: _sectionViewComponent.incubateObject(_settingsStack, {
 																   model: model
-															   }, Qt.Asynchronous)
-
+															   }, Qt.Synchronous)
 		onCloseSettings: {
 			_settingsView.fullClose = true;
 			QuickPresenter.popView();

src/imports/mvvmquick/qqmlquickpresenter.cpp

@@ -123,7 +123,7 @@ void QQmlQuickPresenter::present(ViewModel *viewModel, const QVariantHash &param
 				this, &QQmlQuickPresenter::loadingProgressChanged);
 		connect(_latestComponent, &QQmlComponent::statusChanged,
 				this, &QQmlQuickPresenter::statusChanged);
-		_latestComponent->loadUrl(viewUrl, QQmlComponent::Asynchronous);
+		_latestComponent->loadUrl(viewUrl, QQmlComponent::PreferSynchronous);
 	}
 }