(Affects Live Content) When quickly switching between commands to teleport an entity, the entity will appear to jitter between the two teleport locations.

Verification Builds: 1.7.0.3 (1130546)

Summary: This is a bit of a difficult one to describe; heavily recommend downloading the attached world to see for yourself, or at least watching the attached video. Switching between two teleport commands - only one targeting the entity at any given time - will cause the targeted entity to jitter between the two commands' target locations for a few moments. This hinders any system that needs to move an entity depending on player action.

Impact: Affects live content (2-D Arcade: Alien Invasion). This mechanic is used to move the player's ship back and forth.

Repro Steps:

1. Create the attached world.
2. Observe that the command blocks are set up to teleport cows between two coordinates depending on which color of concrete the player is standing on.
3. Walk back and forth between the two concrete blocks while a cow is in the world.

Observed Results: The cow appears to jitter between the two locations.

Expected Results: The cow should snap to the new location as soon as the player moves to the other concrete block.

Screenshots/Videos attached: Yes

Notes: This issue can also be observed by opening the 2-D Arcade: Alien Invasion world, starting a game, and moving from side to side.

Video link: https://youtu.be/wV6rc9d6L9Q.

Regression Version: This issue did not exist in 1.6 release.