Instrument names in mixer

I Usually change the instrument names, making them shorter amd more readable. Sometimes I replace (and, of course) rename the instruments. For example, I need domra that is not presented in the library but can be easily replaced by guitar. In that cale I replace "Acoustic guitar" by "Domra" on my system. But on the mixer panel I still see the "Acoustic guitar" against my Domra slider. It looks ridiculous.

How could I make the MuseScore to show me the changed instrument name on the mixer panel?