The Bug

The Old Growth Spruce Taiga & Old Growth Birch Forest (Known as Giant Spruce Taiga & Tall Birch Forest in 1.17.1) are not apart of the "Adventuring Time" advancement

Reproduce

• Load a single biome world with Old Growth Spruce Taiga or Old Growth Birch Forest
• Do /advancement grant @s only minecraft:adventure/sleep_in_bed
• Open your advancement screen
  Notice no biomes have been unlocked under Adventuring Time

Expected Result

The biomes would be apart of "Adventuring Time" advancement