Using Dynamic Surroundings v3.6.1.0 for Minecraft 1.12.2

Is there a way to change glass so it doesn't also make wood step sounds? I changed almost all of the sounds in the mod to Source Engine sound effects, but glass has this weird effect where it also plays wood stepping sounds along with the glass sounds.

I couldn't find a way to have it only play the glass sounds for walking, even after setting this up in a json in the dsurround folder:

        "footsteps":{
			"minecraft:glass": "glass"
        },

I tested it with another profile, "mud", just to be sure that it works, and it worked. I got squishy sloshy sounds when walking on glass blocks as expected, and no wood stepping sounds. However, when I changed it to "glass", the wood step sounds came back, leading me to believe it's part of the "glass" acoustic profile and cannot be changed.

The list of acoustic profiles (on both github and readthedocs) lists glass as simply just glass and not glass,wood, even though the latter is what is heard in game.

Is there maybe a way to have it grab only specific sound effects from the jar? I couldn't find any documentation for doing that, but I think it's my only workaround unfortunately.