I noticed, after the Rare Salvage update, that my Salvage-o-Matic(Silver) sometimes jumps to the location of my last Rare Salvaged Item – only if I salvage 3 or more items. This means that it sometimes switches locations with the salvaged materials in my Inventory.
OR
Other times it randomly appears in my bank when I open [the bank] up after salvaging a Rare.
I do not notice this weirdness on any items with a quality lower than Rare