Doesn't seem to work with Macaw's Furniture, Every Compat, and I'm sure a few others.

Can confirm, doesn't work with Sophisticated Storage too, which is used in lots of modpacks. It marks the chest in which the item is in but doesn't highlight the item after opening the chest.

You guys beat me to it by over a year lol. Also want it to work with Sophisticated Storage. Mod might be on the backburner?