The Bug:

Allays attempt to pathfind to items that are outside of the world border.

Steps to Reproduce:

1. Set the world border's center to your current position and to thirty blocks wide by using the commands provided below.

   /worldborder center ~ ~

   /worldborder set 30

2. Throw some dirt along the edges of the world border.
3. Set the world border to twenty blocks wide so that the dirt is outside of the world border by using the command provided below.

   /worldborder set 20

4. Summon an allay, give it some dirt, and watch its behavior closely as it searches for dirt to collect.
5. Take note as to whether or not allays attempt to pathfind to items that are outside of the world border.

Observed Behavior:

Allays attempt to pathfind to items that are outside of the world border.

Expected Behavior:

Allays would not attempt to pathfind to items that are outside of the world border.