Both Bodymovin and Lottie plugin produce same results, using custom bezier keyframes on start and end parameters, offset is adjusted but not animated. Tried again with just linear keyframes, same problem. When I playback on Lottie (web or plugin) I get lines that glitch (both length and stroke width). I saw a post about this from a few years ago, that claims to have fixed this issue... I can confirm that it is in fact back.