Steps to reproduce

1. Build a 2-block-high covered pool with a bubble column in one corner.
2. Equip a turtle shell helmet.
3. Enter the pool and wait until the water breathing effect runs out.
4. Enter the bubble column.
5. Exit the bubble column while staying in the pool.

Expected result

You get the water breathing effect.

Actual result

You do not get the water breathing effect.

On Java Edition, water breathing is given as long as the player can breathe, however on Bedrock this is not the case. I hoped this gets fixed so turtle shells become more worth it.