I have a project where the percussion track has a display problem in the Piano Roll View. I can see all the notes clearly at first but as I scroll through the timeline they become progressively dim and eventually fade into blackness. The notes, however, are still there (thankfully) and can be heard at normal volume. In order to edit these notes, if I need to, I have to hunt for them by mousing over the grid where I expect them to be and when the pointer turns into the selection tool I know I have found a faded note. I can then double-click and edit the note. So I have a work-around but it does add frustration factor and time.
Have you experienced this? Is there a known fix?
Thanks much for your response.