I hope someone can help me.
I’ve been working on a project for the past few days but suddenly when I hit the spacebar to play back the project the scrolling cursor doesn’t scroll with the playback, nor does the time code in the time display start. When I then hit the spacebar to stop playback, the cursor and the timecode jumps to the point where I stopped the project. Why has it suddenly started to do this? I can’t work out if I’ve selected an option or switched off a button accidentally. If anyone can help me, I would really appreciate it as it’s twisting my melon! 
OK, after completely shutting down Cubase then restarting it and opening my saved project, all seems to be back to normal. So weird!!