[W|0.4.466] Idle colonists walk far away from home

[Detoxicity]

Version:
0.4.466

Summary:
Colonists do not seem to idle next to tables. In several sessions I've played the colonists seem to path to a small group of squares well away from the home base. Unofficially I've noticed that it tends to be to the right side of the map regarding the tables I place.

Steps to Reproduce:
1. Start a new game, any setting should work.
2. Place a table anywhere.
3. Let your colonists go idle.
4. Scratch your head as they wander 3/4 of the map away.

Expected Results:
I was expecting the colonists to either chill in their home region or at least within 10 blocks of a table.

Actual Results:
Colonists do not idle anywhere near your tables or home region.

Attachments:
My current game showing the three tables I have placed. No table is active here.
http://i.imgur.com/EOIMTh9.png

My current game with all the tables active.
http://i.imgur.com/QEHHrTI.png

Brand new game showing how the idle is spread.
http://i.imgur.com/dknuO5L.png

[Morrigi]

Can confirm that this has happened in my games in alpha 4f, and also happened in 4, with and without mods