Normally in Minecraft when you activate a piston it extends smoothly. However now when you activate the piston it doesn't have this effect. It just suddenly extends without a transition,
Related issues
duplicates
Comments


Confirmed for 14w29b. There is a transition but the extension and block being pushed becomes invisible. This seems to be a worse version of MC-58437 which was apparently fixed. Although this could also be a duplicate of other piston bugs that have been reported for 14w29b.
See https://www.youtube.com/watch?v=EX9tHztN9zQ for video example.

Confirmed for 14w30b

Confirmed for 14w30c

Confirmed for 14w31a

See: https://www.youtube.com/watch?v=EX9tHztN9zQ
Clarify title. It does have a transition, but flickers between.
I couldn't replicate this. Any more details about how you made this happen?