When extinguishing any Brazier type with a Shovel, the extinguish sound is played twice.
When any Brazier type is extinguished when it is waterlogged, the extinguish sound is played at half the pitch it should be played at. Extinguishing Braziers with Splash Water Bottles works as intended.

This might not be an issue, but Braziers do not have ambient sounds unlike Campfires or Fire.