Playing on PS5
I was trading in some parts for rarer parts.
I had a stack of three torpedo launchers and 4 thunderbird landing bays as well as some other misc stacks.
My first trade I used one torpedo launcher as it brought the trade to 99%
I then used 2 thunderbird landing bays and some misc hull panels which also had stacks of about 5-6 (I gave one of each in the reamining trade tiles.
After these two trades I went into my inventory to notice all my torpedo launchers, TB landing bays and the two hull variants to be gone completely.
It seems splitting/reducing a stack during trade is bugged, I was able to recreate this bug but not every time. Sometimes the stack would stay, sometimes the whole thing would disappear. I triple checked each time too that the trade window wasn’t disaplying the full stack as being submitted.
I also checked all available inventories in case they were moved elsewhere after the split and I also checked the corvette module storage spillover box thingy.
I seem to recall a similar issue with bone trading when first introduced.