Hmm yes, the game currently waits for the projectile to hit before continuing so if it flew right passed then it would have waited forever... I haven't seen this happen before so I'll see if I can make it happen.
Thanks heaps for letting me know!
Edit: I wasn't able to make it happen but from reviewing the code I can see how it could have happened. I've made a change so it shouldn't be possible anymore in the latest version v0.09.07. Thanks again for taking the time to let me know! :)