The Bug:

Note blocks placed above honeycomb blocks in Java Edition don't play the flute instrument, unlike in Bedrock Edition.

Steps to Reproduce:

1. Launch the Java Edition version of the game and join a world.
2. Place a note block above a honeycomb block.
3. Activate the note block and take note of the instrument it plays.
4. Launch the Bedrock Edition version of the game and join a world.
5. Place a note block above a honeycomb block.
6. Activate the note block and take note of the instrument it plays.
7. Take note as to whether or not note blocks placed above honeycomb blocks in Java Edition play the flute instrument, just like in Bedrock Edition.

Observed Behavior:

Note blocks placed above honeycomb blocks in Java Edition don't play the flute instrument, unlike in Bedrock Edition.

Expected Behavior:

Note blocks placed above honeycomb blocks in Java Edition would play the flute instrument, just like in Bedrock Edition.

Code Analysis:

Code analysis by ampolive can be found in this comment.