I’d like to report a bug.
I had around 500 Mosswool Thread, a tailoring item bought from the vendor, and a few hundred Adorning Ribbon, also a vendor tailoring item, stored in my reagent bag.
When I logged in they were gone. I bought some more to craft some items.
The next day I logged in and those missing items were BACK and all the items in my reagent bag slots had shuffled around.