potential crash
https://goo.gl/jKFKr9
out of range baseline value
https://goo.gl/TUSY3M
move segment doesnt work properly
https://goo.gl/bvXc8P
connect to the right side related 1
https://goo.gl/oBFVAy
connect to the right side related 2
https://goo.gl/4CWA8k