Percussion part showing multiple staves rather than instrument changes

I have four percussion parts, each of which contain instrument changes. On all the percussion parts except one, there is only a single staff with instrument change labels on it, which is what I want. On the percussion 3 part for some reason, there is instead a staff for every instrument that gets played in that system of music. I cross checked all my layout settings and they’re identical as far as I can tell. In particular I do have instrument changes enabled in the percussion 3 part. Why is the layout different?

Example of what most of the parts look like (good):

Example of what the faulty part looks like:

Thank you in advance for your help!

Library->Layout Options->Players->Percussion. Check with the percussion 3 part selected on the right side.

Jesper

It is set to 5-line staff, but all of the layouts are set that way including the ones that work.

Could you share the file? You can pm me if you prefer.

Jesper

You have instrument changes ticked for that part also, I guess?