yup the 2 most annoying update 16 bugs for me are:
1. pips reset to 4-2-0 upon boarding the ship from srv or foot
2. most recent item bought from carriers not reflecting in inventory. workaround for this is to reenter the commodities market
The second has been happening for 2 years+
I reported it, report got binned for lack of responses.
I've voted on a similar report, still pending.
But hey, maybe this will get it fixed:
If you don't refresh the market at the carrier the goods do not exist on your ship until you open another market place or relog. NPCs don't interdict you because your hold is 'empty'. Not only that, a fully laden T9 which would normally have a range of 11 ly still has a range of 20 ly.
So you buy from your carrier to fill your hold, jump 18-20 light years to the CG system, fly to the station without NPC pirates bugging you, open the marketplace there and voila, your hold is magically full. Sell the cargo, return to carrier.
As I mentioned, I've reported it at least once and voted on someone else's issue report to try and get it fixed, but as it's still present after 2 years I guess it's an intended stealth gameplay mechanic for fleet carrier owners.