Whenever I look around when in LAN multiplayer, my character tends to jitter while looking around. Plz fix. Thanks
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I have this problem too, it can happen all the time I have seen it most happens in a super flat.

Seems to happen for me after some time spent in-game. The only workaround I know of that is easy is to (properly) restart the game.
The less-reliable one is for me to attempt (and fail multiple times) by harshly tring to swipe randomly and extremely quickly. Yet like I said, this method is unreliable.
Thank you for your report!
However, this issue has been closed as a Duplicate of MCPE-16688.
Your additional information and observations are very useful, so if you can add them to the comments section of the parent issue it would be appreciated.
If you have not, you might like to make use of the search feature before making a new ticket, as it's likely that the issue has been reported already.
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Does this happen when it's raining/snowing?