Recording crashes if the cursor is within the first measure of the entire tab and the piano panel is visible, as the cursor enters into view during the pickup after the record button is pressed.
If a selection containing both notes and chords is unselected, duplicate notes may remain on the piano until the panel is hidden and reshown. For example, alternating between A and Esc here will produce a stack of Es on the piano:
The YouTube sync panel is hidden behind the piano panel when it is not in use. Additionally, creating a new file does not unload the previous YouTube video, in which case the black area will continue displaying that video.
