vendings not receiving components

Just a thought, do you have slot free in the vending machine for the scrap to be put into?  E.g. if you fill it entirely full of stacks of your goods to sell, and someone purchases something that doesn't free up a slot (so say half a stack of something) the scrap will spit out the back and potentially despawn.

Make sure you have space in the vending machine for the scrap, or only sell full stacks of items so when someone purchases a stack the slot it was occupying is free for scrap.

yes empty slots  .. only scrap in the vending to buy stuff nothing else ..i tried puting one of each components i buy from the vending but doesnt change anything , i made a video or i can show an admin

Do you have any stacks of scraps that is above 1000? I am wondering if the stack modification is messing up with the logic of the vending machines. Like on RustEZ is stacks to 10,000 but on vanilla it's 1000. I am wondering if a stack is above 1,000 it messes with the logic. Or anything else in the vending machine that exceeds the vanilla stack sizes?

I have had this happen before. Sometimes it's not easy to replicate. I don't do much vending but I have seen scrap on the floor behind the vending machine many times, and a friend that does a lot of vending complain.

no i can put in 50 scrap for one gear or 1000 for 20 .. it doesnt change anything , it just spits it out the back on ground so if im afk  .. its lost

I can reproduce this every time just by spending more that 10k in a shop. On the 10,000th scrap purchase it sill spit that stack out every time for me. In my case my shop has 4 vending machines and if I sell 5k worth of fuel in one and 6k worth of fuel in another one it sill spit out the 6k purchase because it put me over 10k. If you need me to show you just let me know and ill be happy to help,