Instrument Track Editing Failure

Hey everyone!

I found a bug today may one of you have a solution for it.

I’m using Cubase 8.5.
I created a new project and a new instrument track in it. Played some notes on my keyboard and when i tried to edit them it just went wrong.
If i selected multiple written notes i could move them in any direction, BUT if i selected just one note, and tried to move it, it duplicated itself!
I even tried with new projects, same thing happened.
This issue never happened before.

Does any of you have an idea what it could be and how can i fix this?

Thank You!


Hi and welcome,

By default, you can duplicate the selected event by holding down Alt modifier. Make sure the Alt modifier is not down.

Could you try in Safe Start Mode, please?