Danke schön!
I saw a debugger in your video. Probably It's a bug. What emulator do you use? Any ideas what you did before it happened? I don't know German.
I can reassure you. 🙂 It wasn't a bug, but rather accidentally opening the debugger in "Speccy" with the "F1" key. I actually wanted to go back to the title screen and didn't know which key to use to do that.
