If you pause the game while sprinting/walking your screen will shake. The faster you are moving the faster it shakes! I'm guessing it only effects singleplayer, i haven't tested multiplayer yet
MC-118007
Weird pause bug
Resolved
Duplicate
0
Sean Hoops
(Unassigned)
Unconfirmed
Minecraft 1.12 Pre-Release 6
Retrieved
Duplicates MC-118002