I'm not sure if this is just a question (because I could not find the config for it) or if this is a bug, because there were no such sound among the GUI options for inventories, but when doing a middle click in inventories, there is a "TSS" sound, like when something is thrown into lava.

Nothing (that I know of) breaks, but since I want to use middle click for sorting, it would be nice to know how to turn this sound off?

Playing on Neoforge for Minecraft 1.21.1.

This is the item clone sound, it will hiss like lava if there's nothing to clone or you arent in the right gamemode. :)