[Unmodded] [Workers] AI is unable to use gas buildings of races other than their editor-set race

[BoneHorror]

(This is an unmodded SC issue)
Computer players will fail to use gas buildings (Refineries, Assimilators, Extractors) of races other than the one that's selected for them in the editor; as a result, AIs will never extract gas without a gas building of their own race.

Notes:
AIs will still be able to use other race's workers in their own race's gas building
The map provided below is broodwar xZ8 edited so that white only has Zerg gas buildings (editor race: Terran) and starts with 0 gas

Repro:

1. Download the provided repro map here
2. Launch the map in any RM or Broodwar version
3. Observe as white fails to gather any gas which stops him from executing his script properly