Axolotls attempt to pathfind to water that's outside of the world border

The Bug:

Axolotls attempt to pathfind to water that's outside of the world border.

Steps to Reproduce:

1. Set the center of the world border to your current position, along with making it thirty blocks wide by using the commands provided below.

   /worldborder center ~ ~
   /worldborder set 30

2. Place some water along the edges of the world border.

3. Set the world border to twenty blocks wide so that there's some water outside of the world border by using the command provided below.

   /worldborder set 20

4. Summon some axolotls within the world border and watch them closely.

5. Take note as to whether or not axolotls attempt to pathfind to water that's outside of the world border.

Observed Behavior:

Axolotls attempt to pathfind to water that's outside of the world border.

Expected Behavior:

Axolotls would not attempt to pathfind to water that's outside of the world border.