Haven't encountered on singleplayer, but had this happen 3-4 times today on a server. Throwing a tomahawk works in most cases, but sometimes the client freezes at the moment the tomahawk hits a mob. The Minecraft window stops responding, but it seems the player does not leave the server until Minecraft is killed. No crash report is generated. Can't recall if I check the logs, I'll need to remember to check them next time it happens.

(edit) Just froze after throwing a tomahawk that did not hit, as far as I could tell (bad connection at the time). I think this has something to do with data not syncing correctly. There's no information in the logs, so that's just an educated guess. I remember crashing occasionally when developing the tomahawks. It seemed like the entity lost the data on the item somehow. I imagine that's what's going wrong here.

I've also noticed the landed tomahawk particles do not spawn on servers. And the issue with tomahawks not appearing where they actually are still exists...

• Fix the weird client freeze
• Fix tomahawks appearing to be where they aren't
• Fix tomahawk particles (optional if the previous problem can be fixed)