When on a piano roll sequence in LMMS 1.3 alpha, and the piano roll is empty (ie has no notes on it), then hitting Shift-Tab-Right arrow or Ctrl-Tab-right arrow crashes LMMS. Same goes with left arrow. However, this does not happen with up and down arrow.
https://drive.google.com/file/d/1kO6I9W ... sp=sharing (to see in high quality, change resolution to 1080 p and view.)
https://drive.google.com/file/d/1kO6I9W ... sp=sharing (to see in high quality, change resolution to 1080 p and view.)