IronDoor Not Producing Sound

So i was making a Time Trial Parkour Course (Using the new command blocks and objectives) and i placed an iron door (to be activated by redstone) as i normally would. Expecting it to produce the block placing sound.

But in fact, when i placed the Door. The sound wasn't produced, i logged in and out of the world to make sure it wasn't my headphones. I placed other blocks to also make sure it wasn't my sound, and they worked fine. But whene

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
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