This is not a Preferences or a Part Marker issue.

I have had the same and similar experiences as the original poster and have documented some of them on this forum.

Undo, deletes and scrolling are examples of the actions that trigger the behavior.

There is a BiaB problem with the Chord Sheet and I hope PGM recognizes that and is working on fixing it.

Last edited by FirstBassman; 03/06/10 11:43 AM.