Problem with tutorial missions

Hi, I have recently attempted to do some training missions but I'm having an issue with the "press space bar to continue" thing. I know it's been an issue for some people for quite a while but I remember that pressing the gun trigger instead of the space bar used to do the trick. Now it doesn't work anymore. Any idea? Thanks!

EDIT: I found what was causing the problem. If you bound "Space" to any UI command like me (I assigned it to re-center VR viewpoint), you need to unbind it and the key will start to work in training missions.