I wanted to make a 2d platformer so I decide to take a look at the themo project 2d/platformer_dcc, but when I run it I found a behaviour I don't quite get:
If you press i.e left + up to jump left and keep them pressed, and then spacebar to try to shoot, nothing happens. The same happens for any same combination of left / up / down / spacebar, but if one of the keys is right, everything works as expected.
Is it supposed to work like that? And how can I avoid it?