When using ctrl+shiftclick on a Forestry Backpack the client crashes/freezes. Regardless if you want to put something in or out.
1.2.5 did have inventorytweaks, IIRC. But I'm pretty sure none of the inventory tweaks worked with the backpacks, or at least most of them didn't work.
That's what i said, it didn't work on backpacks. @lord ctrl+shiftclick is a command from inventory tweaks, if you use it on one item/stack of item, it moves (mostly ) all those items from same tier into the other inventory. also works with dropping items.
@Demenzia Is it just like a compatibility thing with Forestry backpacks? They're already quite derpy when you either sort or move them sometimes... They love refusing to move -__-