opensim-core: Memory leak during integration

I was trying to figure out why we get memory leaks in osim-rl. I use a slightly different custom version of osim-rl. However, it seems that everything points towards the integrate function of the Manager. The new version of the Manager does not have a reset mechanism and therefore one must delete the manager and create a new one. I have a minimum working example attached which demonstrates that memory increases. Could you please have a look and tell me if I miss something and if there is a way to figure out where the problem is?

memory_leak_code.zip

For those who do not have time to run the code, you can find the code here:

#include <iostream>
#include <OpenSim/OpenSim.h>
#include "memory_usage.h"

using namespace OpenSim;
using namespace SimTK;
using namespace std;

int main(int argc, char *argv[])
{
	auto model = Model("model_generic.osim");
	auto state = model.initSystem();
	auto manager = new Manager(model);

	auto previous_size = getCurrentRSS();
	auto i = 101;
	while (true) {
		if (i >= 100) {
			i = 1;
			state = model.initializeState();
			model.equilibrateMuscles(state);
			state.setTime(0);
			cout << "manager will be deleted" << endl;
			delete manager;
			manager = new Manager(model);
			manager->initialize(state);
		}
		manager->integrate(i * 0.01);
		i++;

		// check if memory usage increased
		auto current_size = getCurrentRSS();
		auto diff = current_size - previous_size;
		previous_size = current_size;
		if (diff != 0) {
			cout << i << " " << diff * 1e-6 << "MB" << endl;
		}
	}

    return 0;
}

Many thanks!