Missing biome tags on newly discovered maps after patch 0.3.1

After updating to patch 0.3.1, biome tags no longer appear on newly discovered maps. However, maps discovered prior to this patch still display biome tags correctly.

Steps to Reproduce:

Run a tower map.
View any newly discovered maps.

Expected Result:
Each newly discovered map should display its corresponding biome tag.

Actual Result:
Newly discovered maps do not show any biome tag.

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