It seems that items inside of private containers don't count towards the available material list during production and refining (and others probably).. meaning, if you have all of your material in a "Refined Resources" container inside your private storage, it wont pull from them.

Would be awesome if we were able to use resources inside of them. Adding a flag "Ignore this container during production" or something would let users check it if they want the game to exclude that container, in case its a guild/holding one.

Also,

When dragging a stack over your max weight, it should take the maximum weight allowed in your cargo. If I've got 90u of titanium and drag it into my cargo hold, which has 27.5u remaining space, I'd expect 27.5u of the titanium to be transferred to my inventory.