I believe CCVector should not release an object if object is not in the Vector.

So the code below:

void eraseObject(T object, bool toRelease = true)
{
        CCASSERT(object != nullptr, "The object should not be nullptr");
        auto iter = std::find(_data.begin(), _data.end(), object);
        if (iter != _data.end())
            _data.erase(iter);
        if (toRelease)
            object->release();
}

should be changed to:
void eraseObject(T object, bool toRelease = true)
{
        CCASSERT(object != nullptr, "The object should not be nullptr");
        auto iter = std::find(_data.begin(), _data.end(), object);
        if (iter != _data.end()){
            _data.erase(iter);
            if (toRelease)
               object->release();
        }
}