Bug or question - about flecs HOT 1 CLOSED

#include <iostream>
#include <string>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
#include "flecs.h"
class test {
public:
    // Default constructor
    test() {
        ttt = std::make_shared<std::string>("testme \n");
    }

    // Copy constructor
    test(const test& other) {
        // Perform a deep copy of the shared_ptr content
        if (other.ttt) {
            ttt = std::make_shared<std::string>(*other.ttt);
        }
    }

    // Move constructor
    test(test&& other) noexcept {
        // Move the shared_ptr content
        ttt = std::move(other.ttt);
        // Set the source shared_ptr to null to avoid double deletion
        other.ttt = nullptr;
    }

    // Move assignment operator
    test& operator=(test&& other) noexcept {
        if (this != &other) {
            // Release the current shared_ptr content
            ttt = nullptr;

            // Move the shared_ptr content
            ttt = std::move(other.ttt);

            // Set the source shared_ptr to null to avoid double deletion
            other.ttt = nullptr;
        }
        return *this;
    }

    // Destructor
    ~test() {
        std::cout << "end of project";
    }

    void printme() {
        if (ttt) {
            std::cout << *ttt << std::endl;
            return;
        }
    }

private:
    std::shared_ptr<std::string> ttt;
};

flecs::entity & doit(flecs::world& w){
    flecs::entity t = w.entity("test");
	flecs::entity t1 = t.add<test>();
	return t1;
}
int main(int argc, char** argv) {
	flecs::world world;

	auto t = doit(world);
    auto f = t.get_mut<test>(); // Now this should work
   
 
    f->printme();

	return 0;
}