Tipped Arrow Bug

(Note: My laptop runs singleplayer worlds at 5, 4, 3, 2, or 1 frame per second(s) (FPS) so this may be lag.) When I was playing Minecraft (singleplayer) I was shooting tipped arrows and notice they weren't disappearing. I'm 99% sure that they are supposed to disappear even if I have Infinity enchant on. Bye.