keyReleased(int key) not working

Hey all, as the title says I have an issue with keyReleased(int key)… It is not working at all, while keyPressed(int key) is working properly…

I am using ofAppNoWindow() and I encountered somewhere a topic that mentioned that keys and events do not work when ofAppNoWindow() is used. On the other hand though, keyPressed function works (if I hold a key pressed I get a stream of keyPressed function calls, which I am not sure this is the intended way the function should work…).

Any ideas as to what might be the problem?