Y try to move the mouse and..
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I try this...
https://bugs.mojang.com/browse/MC-83488
https://www.youtube.com/watch?v=ITMBeBmeXJ8
...but dont work.
Environment
S.O: Windows 10
F3 + C: http://pastebin.com/raw/bL5zqJdM
Debug Info:
[media]
MC-105011
Mouse / Camera Bug
Resolved
Duplicate
0
Caused by 3rd party software like Synergy, see MC-15120