Instrument change in first tick corrupts staff instrument, cannot be undone

Drag an Instrument change on the first note or rest of a staff. The staff name is deleted, and "undo" does not restore it.

There are a couple of use cases for a first-tick instrument change; for example, if the staff begins with cue notes of another part, or if the instrument is percussion from the beginning, like vocalists singing drum-like noises or clapping instead of singing (you wouldn't rename the staff "Drumset" or "Hand Clap" simply because it starts that way).