When you shoot an arrow onto a comparator/repeater and then active the comparator/repeater the arrow will shake. I found this by accident and its just really weird. This doesnt really have to be fixed but its just a strange little thing I found while shooting stuff from dispensers while bored 🙂.
Duplicate of MC-3352, please use the search function to see if your bug has already been submitted. Currently over 49% of tickets are being closed as duplicate.