There is a Problem with the milling and prospecting aspect of the Profession icon in the bag when you activate it. It shines like it would for deconstruction, but when I click a mineral or plant nothing happens.

The button only works for deconstructing and nothing else sadly

No error messages as well

can you give specific items, i will have to get the prof and get to that part since i only have an enchanter and havent came across anything yet (but havent really gotten far yet)

looks like the library we use isnt fully updated (plus we have to use a newer api to do some stuff like prospecting)... soo i have pushed a fix for prospecting... havent done/tried herbs yet... if u want to try development version for prospecting the ore... let me know how it goes

The things I tried were the classic plants and ores, as well as the plants you get from gathering in Zandalar.

So at least the first few things you collect (mining/gathering) in classic and BfA. Other expansions I haven't tried yet