I’m running straw golem version 1.10-beta-5, NinjaPhenix’s Expanded Storage 7.3.0, Fabric loader version 0.12.5, and Minecraft 1.17.1. I don’t seem to be able to designate an expanded storage chest as a place for the Golem to drop off items. Seems to work with other modded storage, like Charm. I’ll open a ticket on the Expanded Storage end too because it could be their issue.

Looking at this, its lower priority though - problem is that expanded storage chests don't extend vanilla's base container class, but rather a custom base class that has a container.

I'll get to it eventually though!