Wt

When I supply the layout to the WContainerWidget and call setHidden(true), the WContainerWidget does not hide.

    auto widget = root()->addWidget(std::make_unique<Wt::WContainerWidget>());
    auto layout = widget->setLayout(std::make_unique<Wt::WVBoxLayout>());
    layout->setPreferredImplementation(Wt::LayoutImplementation::Flex);

    //The problem is not reproducible with js implementation. 
    //layout->setPreferredImplementation(Wt::LayoutImplementation::JavaScript);

    layout->addWidget(std::make_unique<Wt::WText>("some text."));
    widget->setHidden(true);

A workaround is to call a javascript to hide it.

widget->doJavaScript(Wt::WString(R"($("#{1}").hide())").arg(widget->id()).toUTF8());