Shooting Bow Underwater causes client game crash

Shot an arrow underwater with a bow having Enchanted affects of sharp 5, thorns 3, power 5, fire aspect 2, flame 1 after which my game crashed

I expected the arrow to not shoot or not go far, being underwater

What actually happened was...:

Shot the 1st time then 2nd time it crashed with following msg in console.
27.09 16:35:19 [Disconnect] User [16:35:19] [Server thread/INFO]: Morpheus1101 has disconnected, reason: disconnect.genericReason
27.09 16:35:19 [Server] INFO at ee.run(SourceFile:117) [weeklybuild.jar:?]
27.09 16:35:19 [Server] INFO at ec.d(SourceFile:19) [weeklybuild.jar:?]
27.09 16:35:19 [Server] INFO at ec.i(SourceFile:179) [weeklybuild.jar:?]
27.09 16:35:19 [Server] INFO at gw.a(SourceFile:219) ~[weeklybuild.jar:?]
27.09 16:35:19 [Server] INFO at gm.a(SourceFile:49) ~[weeklybuild.jar:?]
27.09 16:35:19 [Server] INFO at gw.a(SourceFile:228) ~[weeklybuild.jar:?]
27.09 16:35:19 [Server] INFO java.lang.NullPointerException
27.09 16:35:19 [Server] INFO [16:35:19] Connection #40 write thread/ERROR: Exception on tcp connection

Steps to Reproduce:

Make bow, go underwater and shoot