I have a problem with staves seamingly random changing clef, for instans if jumping from a drum part/track to the bass track above suddenly makes the intrument setting change.
To correct the problem I have to go to the Instrument settings and “start over” with the correct instrument type once again to make the part appear correctly. In this case one again chose bass as instrument type.
Any suggestion on how to solve the issus would be most apprechiated.
I haven’t seen this problem before. Are you able to attach a project and reproduction steps for this?
Dear Paul,
Than you for kind answer and question.
As noted this appears seamingly random. I will be on the look for if I can find any patterns on what I do when the instrument change appear.
Unfortunately I have a lot of other “bug like” behaviors as well. Wondering if it could be part of “somthing bigger” that affects both this and other issues as well (for instance that I can not extend crec < and dim > signs nor the repeat ending object (1. and 2. with “overhead brackets”). (I’m sorry I don’t know the correct English terms. )
I’ll keep you updated asap when I know more about the issue! 
And it happened again… seamingly random… (have been working for more then an hour whithout problem (well… without THIS problem )
I include an image with the history of actions.
Did you have a Choir (reduction) instrument assigned to another track before that unexpected change?
We’ve previously come across a case where two tracks had their assigned instruments swapped, but haven’t been able to see that again since. Closing and reopening would have resolved that situation.
Just trying to see if this problem follows a similar problem, which may help narrow it down a bit.
Thanks for the kind question, Stefan!
Yes. The “top track” is Choir (reduction).
The following tracks are cornet 1 (Bb), cornet 2 (Bb), baritone (Bb in g-clef), bass (Bb, in g-clef) and percussion (percussion clef).
The tracks does not swop instruments, it is only (in this example) the baritone track that changes to Choir (reduction).
(I have had the issue with the bass suddenly transforming into percussion as well.)
New version of the issue today. - Same issue. Different instruments included (this time a clarinet “automatically” turns into a sketch without changing the “instrument type” (wich originally is sat to, and should continue to be, a clarinet).
That’s certainly unexpected. Would you be able to send the Cubase project file itself? Can you also have a look in %appdata%\Steinberg\ScoringEngine, and send (via private message) the log files you can find in there? If you can also remember the time when you’ve noticed the unintended instrument type swap, we can try to see what happened under the hood.
Stefan
