The Bug

Dragon eggs are able to teleport outside of the world border.

Steps to Reproduce

• Set the center of the world border to your current position and to 10 blocks wide.

• /worldborder center ~ ~
  /worldborder set 10

• Obtain a dragon egg and place it down.

• /give @s minecraft:dragon_egg

• Interact with the dragon egg (right-click on it), until it teleports outside of the world border.
• →  Notice how dragon eggs are able to teleport outside of the world border.

Expected Behavior

The expected behavior would be that dragon eggs are not able to teleport outside of the world border.