'Solo Active Part Only' when editing multiple parts in Key Editor

It would be great to have the ability to solo the active instrument from within the Key Editor when editing multiple parts . Sometimes I have multiple events on the same note and need to identify which instrument is problematic and, as it is, I need to move them all to different pitches before moving them back once I have fixed the issue. Or close the Key Editor and do this in Project View.

If I could ‘Solo Active Part Only’ then I could identify the problem without leaving the Key Editor.

Here’s a post requesting the same.