On Java, the nether brick sound applies to nether brick blocks, slabs, and stairs, red nether brick blocks, slabs, and stairs, nether brick walls, nether brick fences, cracked nether bricks, and chiseled nether bricks.
On Bedrock, however, it only applies to the standard nether brick blocks and red nether brick blocks and their stair counterparts.
You can easily test this yourself if you have both versions.
Thank you for your report!
We're actually already tracking this issue at MCPE-74879, so I will resolve and link this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
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