"Buried" Treasure can generate floating in the air, water or lava

In Java Edition, Buried Treasure always generates with blocks around it. But in Bedrock Edition, "Buried" Treasure can generate floating in the air, water or lava.

How to reproduce:

Use the Seed:193224703405482

/tp 2440 6 -1000

/tp 2455 -17 -890

/tp 2391 8 -1016

/tp 2440 6 -1066

/tp 2440 -59 -937

And take note as to whether or not the treasure chests are generated floating in air, water or lava.

Observed result:

They are floating in the air, water or lava.

Expected result:

They are buried in solid blocks.

Notes:

Relates to MCPE-172251. (Here is a plains biome)