You don't need to search for the item in the list to select it; MIDI selects it automatically.
I’ve done this without maximizing the window and with the list visible, so you can see it more clearly.
However, the list is no longer essential, so it is much more precise to edit the waveform maximize the window and do without the list.
In gif...

You don't need to search for the item in the list to select it; MIDI selects it automatically.
I’ve done this without maximizing the window and with the list visible, so you can see it more clearly.
However, the list is no longer essential, so it is much more precise to edit the waveform maximize the window and do without the list.