Create's andesite funnel and chute cannot extract items from the output slots of several MI machines, notably the furnaces, macerators, mixers, and compressors, unless their input slots are empty. For example, if you place a Steel Mixer above a Chute, provide it steam, and have it process Copper and Tin Dust into Bronze Dust, the chute should extract and spit out the bronze dust as they're made, but, instead, it won't spit out the bronze dust until the copper and tin dust are consumed in crafting or removed by a player.
Changing the "Item Auto-Extraction" setting in the machine's interface and changing the side with the black square on it both have no effect on this issue.

The brass funnel and smart chute can extract from MI's machines, but only if they are given a filter item and the item in the output slot(s) matches it.

I would like to see this fixed so that Create chutes and funnels take items from MI machines' output slots to spit out, regardless of what's in the input slots.

This is must be a bug in create since all other ways of moving items work correctly with MI machines, so I'd report it to them.