It hasn't happened to me yet, but it happened to a friend of mine recently. He said he would have built an interstellar design for credits. However, after building it, he would not have found it. He sorted the inventory several times and restarted the game / console. We even traded something against each other and hoped it might come up too. Unfortunately it is not. Do you have any suggestions how he can get his item back? Maybe someone had the same problem (PS4).
You can keep Rocket League items so that they are no longer visible, unless you specifically go into this "folder". It may have happened to him unintentionally.
Unfortunately I can't think of what this "folder" is called. Is any special inventory, so this item is only displayed there. You can store items there that you want to keep safe.
Otherwise it can also be a mistake in the game and he might get the item automatically in a few days. In the extreme case, he is unlucky and no longer gets it.
It could be a bug, please contact support!
