TerraCotia

Reproduced in Bedrock Edition 1.18.31

Steps to reproduce:

1. Created an artificial body of water above a plains biome 

   • Seed: 1308954611

   • Added a 3x6 dirt patch to coordinates (87,114,-357) through (92,114,-355)

   • Built 3-tall glass wall around the outer edge (86,115,-358) through (93,118,-354)

   • Filled glass tank with water

2. Applied bonemeal to wet dirt blocks in the sky above the plains

Observed Results:

Seagrass and all types of live coral appeared.

Expected Results:

Based on the above text of this bug report, this water not being in a warm ocean biome should only have grown seagrass.

I found this happening with the Experimental Features activated in 1.18.30 of Bedrock, on Windows 11.

Seed -5591850742314480362