If a group of bees are taken to a biome where they do not naturally spawn, they will not create a nest, even if given several types of tree generated from saplings, plenty of grass, and plenty of flowers. Even when constrained to a sealed area (e.g. a greenhouse) they pollinate the flowers but refuse to create nests.

Steps to reproduce:

1. Create a grassy area in a biome in which bees do not naturally spawn, such as a desert.
2. Populate the area with saplings and flowers
3. Either conjure bees via Bee Eggs in Creative or leash bees from neighbouring forest-type biomes, and lead them to the area created in 1.
4. Optionally seal off the area, to force the bees to operate only near the trees and flowers

Expected result:

The bees should create a nest against the trees

Actual result:

No such nest is ever created, even after excessive time.