Biab2017

For the Drum track I remember I saw x in place of notes? How can I correct this situation and return to see the x?

I don't ever recall seeing that in BIAB notation; I know dedicated notation programs can do that, but (and I could be wrong) I'm pretty sure BIAB doesn't do it.

FWIW, I also think it showed 'X's historically, for drum tracks at least (MIDI channel 10).
Whether it is displayed as an X or a circle is pretty minor IMHO, considering notation hasn't been updated in many years.

Maybe a Font change caused it (?) I think a new Font was introduced recently.