Cubase switch between piano roll and Drum map bug?

For example, I have two tracks, one is Drum with Drum map abled and one is Piano Track.
If I open the MIDI region on Piano Track, then I click region on Drum Track, it still display MIDI note as Piano Roll.
If I open the MIDI region on Drum Track, then I click region on Piano Track, it still display MIDI note as Drum map.
The only way is turn off the Key editor and open it again.
Anyone experienced the same bug?

Hi and welcome to the forum,

Which Cubase version exactly do you use? It works on my side.

Do you open the editor in its own window or in the Lower Zone?

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I wouldn’t call this a bug. The windowed editor you have open will display whatever MIDI part is selected.

I have tested both in 12 and 14. Result were the same.

Own window!

If you read my bug carefully. You’ll find it didn’t display whatever MIDI part is selected! It only display which one I open first! If I open Piano Track first, when I select my Drums Track, it still display piano roll instead of drum map!

By the way, did you test it with Key editor instead of Lower Zone?

You misread what I wrote. Cubase has 4 different editors for MIDI data: Key, Drum, List and Score. The editor will stay open and display whatever MIDI part you have selected. You can have multiple editors open at the same time and they will all display whatever part is selected.

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Then this is the design of Cubase, not a bug. As @mlib wrote, you can have up to four different editor windows open at the same time.
If you open the Key Editor window it will always remain the Key Editor. Cubase is not switching.

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My workflow is I have two screens and I’d like to draw MIDI in other Screen with one key editor opened permanently. I wish it will automatically switch between Drum map and Piano Roll When I select Tracks in main screen.
So is it impossible?

If it is not a bug, why it will automatically change if I use it in Lower Zone?

Because the lower zone is not a stand alone window.

You could have both the Key Editor and the Drum Editor open on your other screen on top of each other. Then switch window depending on what type of part you’re editing.

okay.. guess I’ll have to live with it.

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You could create a Global macro that includes a Drum Editor Workspace. For example when you focus the drum track on the Project Page, use a Key Command and the drum editor appears. Then if you focus a piano track it too includes a Key Editor Workspace included in the macro.

But unless you accept what mlib said above, you must go beyond just a double mouse click on a part. You will need to create a Key Command that includes the macro.