No glowstone dust

Works as expected, blazes drop blaze rods, not glowstone dust
Glowstone dust is dropped by witches

Not intended. On my wii u I got glowstone dust.

What is a wii? Is it a server?

Wii U is a discontinued console edition, parity issues are only accepted for bedrock v java.

— Wii U is a discontinued console edition,
This is a big mistake

— parity issues are only accepted for bedrock v java.

Source?

Duplicate of MC-251542 which was later resolved as "Invalid" due to being a feature request.

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We're tracking this issue in MC-251542, so this ticket is being resolved and linked as a duplicate.

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Here's your source: https://feedback.minecraft.net/hc/en-us/articles/360015877192-Parity-Requests-and-You-A-Guide

As for being a mistake, the whole console is discontinued by nintendo; not stopping would've been a big mistake, and a lot of wasted effort.