[MU4 Issue] Default instruments hidden in auto-created parts only become unhidden on reset when toggling between open parts

[avvvvve]

Issue type

UI bug

Bug description

When the initial instrument in an auto-created part is hidden, then the part is reset, the instrument reappears in the score but it still appears as hidden in the Instruments panel. The user has to toggle between open part tabs to see the default instrument as un-hidden.

Steps to reproduce

1. Open a score
2. Open a part
3. Hide the visible instrument in the Instruments panel
4. In the Parts dialog, reset the instrument
5. See that the instrument still appears as hidden in the Instruments panel
6. Select another part tab (or the main score), then click back to the original part tab
7. See that the instrument now appears as un-hidden in the Instruments panel

Expected behaviour

When the user resets an auto-created part, the default instrument for that part should immediately appear as visible (in both the score and the Instruments panel) without the user needing to toggle back and forwards between part tabs.

Screenshots/Screen recordings

parts-reset-hidden.mov

MuseScore Version

MuseScore version (64-bit): 4.1.1-232071203, revision: github-musescore-musescore-e4d1ddf

Regression

I don't know

Operating system

OS: macOS 13.4, Arch.: x86_64

Additional context

Another issue related to resetting auto-created parts: 16532.

[bkunda]

It actually does re-trigger the visibility of the default instrument for that part, however you have to toggle back-and-forwards between the part tab itself for it to appear correctly in the Instruments panel:

Screen.Recording.2023-10-09.at.1.04.59.pm.mov

I'd argue, though, that "resetting" a part should actually reset it, I.e.

• Return its name to the default name
• Reveal only the default instrument for that part
• Hide any other instruments that might have been shown in that part (Per [MU4 Issue] When Reset auto-created part, it should leave only initial instrument in part #16532)

Only the second point above actually happens at the moment (as you can see in my video above).

All of this, to my mind at least, is suggested by the term "reset".

[avvvvve]

I think the crux of this particular issue is that you shouldn't have to view a different part and come back to the part to see that the default instrument visibility has updated. It should update as soon as you reset the part.

And I agree with your definition of reset!

[bkunda]

Updated issue title and description accordingly.
@avvvvve FYI