QttWebEngine crashes when a new view is requested

#0  0x00007ffff16327e0 in QtWebEngineCore::ProfileAdapter::profile() () at /usr/lib/libQt5WebEngineCore.so.5 
#1  0x00007ffff165fdb6 in QtWebEngineCore::WebContentsAdapter::initialize(content::SiteInstance*) () at /usr/lib/libQt5WebEngineCore.so.5 
#2  0x00007ffff166b9c0 in  () at /usr/lib/libQt5WebEngineCore.so.5 
#3  0x0000000000000000 in  ()

// This doesn't work.
WebEngineView {
    id: webengine
    anchors.fill: parent
        
    [...]

    onNewViewRequested: {
        console.log("New View Requested :", JSON.stringify(request, null, 2));            
    }

    [...]
}

// This works. But unable to block the request.
WebEngineView {
    id: webengine
    anchors.fill: parent
        
    [...]

    onNewViewRequested: {
        console.log("New View Requested :", JSON.stringify(request, null, 2));
        request.openIn(webengine);
    }

    [...]
}