Wt

So I have created a widget that has a JSignal<> and constructs it in the constructor. This works fine and when the page loads and the widget is created, it properly responds to the JS call on the browser as needed. However, if I reload the page (F5) in the browser (Firefox) Wt crashes with the following error message:

/usr/local/include/boost/signals2/detail/slot_groups.hpp:150: boost::signals2::detail::grouped_list<Group, GroupCompare, ValueType>::iterator boost::signals2::detail::grouped_list<Group, GroupCompare, ValueType>::erase(const group_key_type&, const iterator&) [with Group = int; GroupCompare = std::less<int>; ValueType = boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot<void(Wt::NoClass, Wt::NoClass, Wt::NoClass, Wt::NoClass, Wt::NoClass, Wt::NoClass), boost::function<void(Wt::NoClass, Wt::NoClass, Wt::NoClass, Wt::NoClass, Wt::NoClass, Wt::NoClass)> >, boost::signals2::mutex> >; boost::signals2::detail::grouped_list<Group, GroupCompare, ValueType>::iterator = std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot<void(Wt::NoClass, Wt::NoClass, Wt::NoClass, Wt::NoClass, Wt::NoClass, Wt::NoClass), boost::function<void(Wt::NoClass, Wt::NoClass, Wt::NoClass, Wt::NoClass, Wt::NoClass, Wt::NoClass)> >, boost::signals2::mutex> > >; boost::signals2::detail::grouped_list<Group, GroupCompare, ValueType>::group_key_type = std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >]: Assertion `map_it != _group_map.end()' failed.

Here is a minimal example of my code:

class MyWidget : public Wt::WContainerWidget{
public:
  MyWidget(Wt::WContainerWidget* parent = nullptr) :
    Wt::WContainerWidget(parent),
    mySignal(this, "specialName")
  {}

  ...
private:
  ...
  Wt::JSignal<> mySignal;
};

This issue occurs even when I'm not doing anything with mySignal from the C end nor the JS end, just constructing it and then reloading the page. However, I do not observe the constructor of my widget being called a second time nor the destructor being called. It should also be noted that if I fire up a second instance of Firefox while the first one is connected and visit my page it behaves (until I reload that page), so the issue seems to be when a particular session reloads.

Any help in this matter would be appreciated, even what to look out for. After quite a while scouring the web, Wt tutorials and docs for differences and searching this forum, I was not able to find anything related to this.