Cauldron water tint does not depend on biome

The bug

Water in cauldrons is not biome dependent. It just uses a fixed dark unusual blue color, which is not consistent with the Java and the Legacy Console Editions. This was reported in MCPE-124388 before but that bug got resolved as incomplete.

Steps to Reproduce:

1. In a plains biome, place a cauldron.

2. In the cauldron in the plains biome, place water.

3. In a swamp biome, place a cauldron.

4. In the cauldron in the swamp biome, place water.

Expected Result:
Water in cauldrons should be biome dependent, like Java, and Legacy Consoles.

Observed Result:

Water in cauldrons is always some unusual shade of blue, which never depends on the biome.