Sorry. I'll run down my experiences so far.
Tutorials 1-3 all work. When beginning, the game suddenly goes to desktop, but I can alt-tab back. But as soon as victory happens, I can't control the game, sometimes it also goes to desktop and I alt-tab back. The only thing that works is hitting Esc or spacebar, which leaves the close up fireworks view and gives the normal camera view. But still, no inputs work. I alt-f4 out. It doesn't save the fact I've beat the tutorial.
Tutorial 4 wouldn't even start. It was a blank screen that I assume should be the brief tutorial message and OK button. I was able to solve this by going windowed, and tutorial 4 was playable. Although, it had the same problem at the end victory as the others.
A video would be excellent.
Could I upload a private youtube video and PM the link?
EDIT: Small addition. I've now been playing tutorial 5. Similar issue as with 4. The first time, it started no issue (well, besides dropping to desktop). Second time it had the same issue as Tutorial 4. To fix I went back to windowed, it still didn't work. I adjusted from 1920x1080 to 1600x900 windowed and the opening message popped up fine. It doesn't drop to desktop when in windowed mode either.
I'm going to submit this as a support ticket (I hadn't seen that option earlier) with a screenshot and log files.