Default containers like chests and other mod containers allow for the sorting and easy extracting/filtered insertion of items, but Personal Chest GUIs don't seem to have this functionality (from Mekanism).

Steps to reproduce
Open Personal Chest with Quark installed

1.19.2 Forge

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this stems from us only supporting normal blocks & iirc mekanisms chest doesnt extend the normal chest classes, however ill take a look anyway and see if theres anything i can do about it

Got it; thanks for taking a look regardless

For reference their chest block seems to be extending BlockPersonalStorage, a custom class they made