Sound for glass placement in wrong sound category

I found this bug in minecraft 1.8.8, I selected 1.8.9 because, well, I couldn't select 1.8.8.

The sound for the placement of glass is in category "Friendly Creatures" instead of what would probably make more sense, "Blocks"

How to reproduce:
Go to your 'Music & Sounds' settings and disable all sounds but "Blocks"
Place glass somewhere in a world
Notice that no sound was played
Now enable "Friendly Creatures" as well.
Place glass again
Notice that the sound was played as normal